Quantum valence criticality in a correlated metal

Kentaro Kuga, Yosuke Matsumoto, Mario Okawa, Shintaro Suzuki, Takahiro Tomita, Keita Sone, Yasuyuki Shimura, Toshiro Sakakibara, Daisuke Nishio-Hamane, Yoshitomo Karaki, Yasutaka Takata, Masaharu Matsunami, Ritsuko Eguchi, Munetaka Taguchi, Ashish Chainani, Shik Shin, Kenji Tamasaku, Yoshinori Nishino, Makina Yabashi, Tetsuya Ishikawa, Satoru Nakatsuji

Science Advances   4 ( 2 )   eaao3547 - 6   2018.2

Strange metal without magnetic criticality

Takahiro Tomita, Kentaro Kuga, Yoshiya Uwatoko, Piers Coleman, Satoru Nakatsuji

Science   349 ( 6247 )   506 - 509   2015.7

Magnetic order induced by Fe substitution of Al site in the heavy-fermion systems α-YbAlB<inf>4</inf> and β-YbAlB<inf>4</inf>

Kentaro Kuga, Gregory Morrison, Larico Treadwell, Julia Y. Chan, Satoru Nakatsuji

Physical Review B - Condensed Matter and Materials Physics   86 ( 22 )   224413-1 - 6   2012.12

Spin-orbital short-range order on a honeycomb-based lattice

S. Nakatsuji, K. Kuga, K. Kimura, R. Satake, N. Katayama, E. Nishibori, H. Sawa, R. Ishii, M. Hagiwara, F. Bridges, T. U. Ito, W. Higemoto, Y. Karaki, M. Halim, A. A. Nugroho, J. A. Rodriguez-Rivera, M. A. Green, C. Broholm

Science   336 ( 6081 )   559 - 563   2012.5

Quantum criticality without tuning in the mixed valence compound β-YbAlB<inf>4</inf>

Yosuke Matsumoto, Satoru Nakatsuji, Kentaro Kuga, Yoshitomo Karaki, Naoki Horie, Yasuyuki Shimura, Toshiro Sakakibara, Andriy H. Nevidomskyy, Piers Coleman

Science   331 ( 6015 )   316 - 319   2011.1

Superconducting properties of the non-fermi-liquid system β-YbAlB4

K. Kuga, Y. Karaki, Y. Matsumoto, Y. Machida, S. Nakatsuji

Physical Review Letters   101 ( 13 )   137004-1 - 4   2008.9

Superconductivity and quantum criticality in the heavy-fermion system β-YbAlB4

S. Nakatsuji, K. Kuga, Y. Machida, T. Tayama, T. Sakakibara, Y. Karaki, H. Ishimoto, S. Yonezawa, Y. Maeno, E. Pearson, G. G. Lonzarich, L. Balicas, H. Lee, Z. Fisk

Nature Physics   4 ( 8 )   603 - 607   2008.8

Coupling of magnetism and transport properties to the lattice degrees of freedom in NdBaCo(2)O5+δ(δ∼0.65).

Pant H, Singh S, Brar J, Sharma P, Bharath M, Kuga K, Takeuchi T, Bindu R

Journal of physics. Condensed matter : an Institute of Physics journal   37 ( 13 )   2025.2

Orbital hybridisation effects in B2 phase Cr doped Co2MnAl.

Swati Pathak, Saurabh Singh, S Khalid, Kentaro Kuga, Tsunehiro Takeuchi, R Bindu

Journal of physics. Condensed matter : an Institute of Physics journal   35 ( 39 )   2023.10

Lattice effects on the physical properties of half-doped perovskite ruthenates

Jaskirat Brar, Saurabh Singh, Kentaro Kuga, Priyamedha Sharma, M. Bharath, Tsunehiro Takeuchi, R. Bindu

JOURNAL OF PHYSICS-CONDENSED MATTER   35 ( 19 )   2023.5

Thermoelectric performance of Fe₂V_0.9W_0.1Al thin films deposited on n-type Si substrates

Machda, F., Singh, S., Kuga, K., Ang, A.K.R., Matsunami, M., Takeuchi, T.

Japanese Journal of Applied Physics   62 ( 5 )   2023.5

Valence fluctuation in Yb₃Si₅ probed by synchrotron X-ray photoemission spectroscopy

Kentaro Kuga, Masaharu Matsunami, Hidenori Fujiwara, Goro Nozue, Akane Ose, Akira Sekiyama, Akira Yasui, Satoru Hamamoto, Masaki Oura, Tsunehiro Takeuchi

Japanese Journal of Applied Physics   62 ( SD )   SD1014 - SD1014   2023.5

Magneto-thermal conductivity effect and enhanced thermoelectric figure of merit in Ag2Te

Keisuke Hirata, Kentaro Kuga, Masaharu Matsunami, Minyue Zhu, Joseph P. Heremans, Tsunehiro Takeuchi

AIP Advances   13 ( 1 )   2023.1

Multicritical phase diagram of <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msub><mml:mi>PrMn</mml:mi><mml:mrow><mml:mn>1</mml:mn><mml:mo>−</mml:mo><mml:mi>x</mml:mi></mml:mrow></mml:msub><mml:msub><mml:mi>Sb</mml:mi><mml:mn>2</mml:mn></mml:msub></mml:mrow></mml:math> with two interacting magnetic elements

Takahiro Urata, Yusuke Takahashi, Kentaro Kuga, Tsunehiro Takeuchi, Hiroshi Ikuta

Physical Review B   106 ( 18 )   2022.11

Synthesis and structural link to the electronic and magneto-transport properties of spin-orbit Mott insulator Sr2IrO4.

Priyamedha Sharma, Saurabh Singh, Kentaro Kuga, Tsunehiro Takeuchi, R Bindu

Journal of physics. Condensed matter : an Institute of Physics journal   34 ( 43 )   2022.10

Electronic structure of silver chalcogenides investigated by hard x-ray photoemission spectroscopy and density functional theory calculations

K. Sato, K. Hirata, S. Singh, K. Kuga, F. Ogawa, M. Matsunami, T. Takeuchi

Journal of Applied Physics   132 ( 4 )   2022.7

Pressure-induced changes of valence fluctuation in beta-YbAlB4 probed by x-ray

Yui Sakaguchi, Shugo Ikeda, Naomi Kawamura, Masaichiro Mizumaki, Kentaro Kuga, Shintaro Suzuki, Keita Sone, Satoru Nakatsuji, Hisao Kobayashi

PHYSICAL REVIEW B   105 ( 15 )   2022.4

Synergetic Enhancement of the Power Factor and Suppression of Lattice Thermal Conductivity via Electronic Structure Modification and Nanostructuring on a Ni- And B-Codoped p-Type Si-Ge Alloy for Thermoelectric Application

Omprakash Muthusamy, Saurabh Singh, Keisuke Hirata, Kentaro Kuga, Santhana Krishnan Harish, Masaru Shimomura, Masahiro Adachi, Yoshiyuki Yamamoto, Masaharu Matsunami, Tsunehiro Takeuchi

ACS Applied Electronic Materials   3 ( 12 )   5621 - 5631   2021.12

High-temperature antiferromagnetism in Yb based heavy fermion systems proximate to a Kondo insulator

Shintaro Suzuki, Kou Takubo, Kentaro Kuga, Wataru Higemoto, Takashi U. Ito, Takahiro Tomita, Yasuyuki Shimura, Yosuke Matsumoto, Cédric Bareille, Hiroki Wadati, Shik Shin, Satoru Nakatsuji

Physical Review Research   3 ( 2 )   2021.5

Strong in-plane anisotropy in the electronic structure of fixed-valence β- LuAlB4

Pascal Reiss, Jordan Baglo, Hong'En Tan, Xiaoye Chen, Sven Friedemann, Kentaro Kuga, F. Malte Grosche, Satoru Nakatsuji, Michael Sutherland

Physical Review B   102 ( 8 )   2020.8

Ground State Local 4f Symmetry of CeAgSb2 Probed by Linearly Polarized Hard X-ray Photoemission

H. Fujiwara, Y. Kondo, S. Hamamoto, Y. Kanai-Nakata, K. Kuga, A. Yamasaki, A. Higashiya, T. Kadono, S. Imada, T. Kiss, A. Tanaka, K. Tamasaku, M. Yabashi, T. Ishikawa, T. Ebihara, A. Sekiyama

Proceedings of the International Conference on Strongly Correlated Electron Systems (SCES2019)   2020.3

Observation of Electronic Structures in Sr-Based Iridates by Bulk-Sensitive Photoemission Spectroscopy

Koya Nakagawa, Hidenori Fujiwara, Satoru Hamamoto, Sho Miyazaki, Yasuhiro Nakatani, Kentaro Kuga, Atsushi Higashiya, Toshiharu Kadono, Kenji Tamasaku, Makina Yabashi, Tetsuya Ishikawa, Takayuki Muro, Shin Imada, Akira Sekiyama, Kouichi Takase, Hiromi Kobori, Atsushi Yamasaki

Proceedings of the International Conference on Strongly Correlated Electron Systems (SCES2019)   30   011146-1 - 6   2020.3

Local 4f Electronic Structure in PrAg2In Studied by Polarized X-Ray Absorption and Photoemission Spectroscopy

Satoru Hamamoto, Shuhei Fujioka, Yuina Kanai-Nakata, Kohei Yamagami, Kentaro Kuga, Hidenori Fujiwara, Takayuki Kiss, Hiroyuki S. Suzuki, Atsushi Higashiya, Atsushi Yamasaki, Shin Imada, Arata Tanaka, Yukiharu Takeda, Yuji Saitoh, Kenji Tamasaku, Makina Yabashi, Tetsuya Ishikawa, Akira Sekiyama

Proceedings of the International Conference on Strongly Correlated Electron Systems (SCES2019)   30   011113-1 - 5   2020.3

Linearly Polarized Hard X-Ray Photoemission Spectroscopy of PrBe13

Satoru Hamamoto, Yuina Kanai-Nakata, Hidenori Fujiwara, Kentaro Kuga, Takayuki Kiss, Atsushi Higashiya, Atsushi Yamasaki, Shin Imada, Arata Tanaka, Kenji Tamasaku, Makina Yabashi, Tetsuya Ishikawa, Hiroyuki Hidaka, Tatsuya Yanagisawa, Hiroshi Amitsuka, Akira Sekiyama

Proceedings of J-Physics 2019: International Conference on Multipole Physics and Related Phenomena   29   012010-1 - 6   2020.2

Linear polarization-dependent core-level photoemission spectroscopy in Yb-based valence fluctuating system

Kentaro Kuga, Yuina Kanai, Hidenori Fujiwara, Kohei Yamagami, Satoru Hamamoto, Yuichi Aoyama, Akira Sekiyama, Atsushi Higashiya, Toshiharu Kadono, Shin Imada, Atsushi Yamasaki, Kenji Tamasaku, Makina Yabashi, Tetsuya Ishikawa, Satoru Nakatsuji, Takayuki Kiss

Journal of Electron Spectroscopy and Related Phenomena   238   146889-1 - 4   2020.1

Observation of the 4f ground-state symmetry in strongly correlated cubic Pr compounds probed by linearly polarized 3d core-level photoemission spectroscopy

S. Hamamoto, Y. Kanai, S. Fujioka, Y. Nakatani, H. Fujiwara, K. Kuga, T. Kiss, A. Higashiya, A. Yamasaki, S. Imada, A. Tanaka, K. Tamasaku, M. Yabashi, T. Ishikawa, H. Hidaka, T. Yanagisawa, H. Amitsuka, K. T. Matsumoto, T. Onimaru, T. Takabatake, A. Sekiyama

Journal of Electron Spectroscopy and Related Phenomena   238   146885-1 - 4   2020.1

Thermoelectric properties and electronic structure for CePd₃ and related materials

Ogawa F., Kuga K., Hirata K., Matsunami M., Takeuchi T.

Meeting Abstracts of the Physical Society of Japan   75.1 ( 0 )   1904 - 1904   2020

Revising the 4f symmetry in CeCu2Ge2: Soft x-ray absorption and hard x-ray photoemission spectroscopy

H. Aratani, Y. Nakatani, H. Fujiwara, M. Kawada, Y. Kanai, K. Yamagami, S. Fujioka, S. Hamamoto, K. Kuga, T. Kiss, A. Yamasaki, A. Higashiya, T. Kadono, S. Imada, A. Tanaka, K. Tamasaku, M. Yabashi, T. Ishikawa, A. Yasui, Y. Saitoh, Y. Narumi, K. Kindo, T. Ebihara, A. Sekiyama

Physical Review B   98 ( 12 )   121113\_1 - 121113\_6   2018.9

Valence fluctuating compound α-YbAlB<inf>4</inf> studied by ¹⁷⁴Yb Mössbauer spectroscopy and X-ray diffraction using synchrotron radiation

Momoko Oura, Shugo Ikeda, Ryo Masuda, Yasuhiro Kobayashi, Makoto Seto, Yoshitaka Yoda, Naohisa Hirao, Saori I. Kawaguchi, Yasuo Ohishi, Shintaro Suzuki, Kentaro Kuga, Satoru Nakatsuji, Hisao Kobayashi

Physica B: Condensed Matter   536 ( 1 )   162 - 164   2018.5

Hole doping effect on the electronic structure of layered oxypnictide LaOMnAs

A. Higashiya, K. Nakagawa, A. Yamasaki, K. Nagai, S. Fujioka, Y. Kanai, K. Yamagami, H. Fujiwara, A. Sekiyama, Amina Abozeed, T. Kadono, S. Imada, K. Kuga, M. Yabashi, K. Tamasaku, T. Ishikawa, S. Toyama, K. Takase

Journal of Electron Spectroscopy and Related Phenomena   220   58 - 60   2017.10

Frustrated magnetism in the Heisenberg pyrochlore antiferromagnets AYb2X4 (A=Cd, Mg; X= S, Se)

Tomoya Higo, Kensuke Iritani, Mario Halim, Wataru Higemoto, Takashi U. Ito, Kentaro Kuga, Kenta Kimura, Satoru Nakatsuji

Physical Review B   95 ( 17 )   174443-1 - 7   2017.5

Anisotropic Thermal Expansion of α-YbAlB<inf>4</inf>

Yosuke Matsumoto, K. Kuga, T. Tomita, R. Küchler, S. Nakatsuji

Journal of Physics: Conference Series   807 ( 2 )   2017.4

Lifetime-broadening-suppressed X-ray absorption spectrum of β-YbAlB4 deduced from Yb 3d → 2p resonant X-ray emission spectroscopy

Naomi Kawamura, Noriko Kanai, Hisashi Hayashi, Yasuhiro H. Matsuda, Masaichiro Mizumaki, Kentaro Kuga, Satoru Nakatsuji, Shinji Watanabe

Journal of the Physical Society of Japan   86 ( 1 )   014711-1 - 7   2017.1

Pressure-induced magnetic transition exceeding 30 K in the Yb-based heavy-fermion β-YbAlB4

Takahiro Tomita, Kentaro Kuga, Yoshiya Uwatoko, Satoru Nakatsuji

Physical Review B   94 ( 24 )   245130-1 - 6   2016.12

Quantum criticality and inhomogeneous magnetic order in Fe-doped α-YbAlB4

D. E. MacLaughlin, K. Kuga, Lei Shu, O. O. Bernal, P. C. Ho, S. Nakatsuji, K. Huang, Z. F. Ding, C. Tan, Jian Zhang

Physical Review B   93 ( 21 )   214421-1 - 8   2016.6

Pressure-induced local structural changes in heavy fermion β-YbAlB<inf>4</inf>

Yui Sakaguchi, Shugo Ikeda, Kentaro Kuga, Shintaro Suzuki, Satoru Nakatsuji, Naohisa Hirao, Yasuo Ohishi, Hisao Kobayashi

Journal of the Physical Society of Japan   85 ( 2 )   023602-1 - 4   2016.3

High Magnetic Transition Temperature and Semiconductor like Transport Properties of Mn-doped α-YbAlB<inf>4</inf>

S. Suzuki, T. Tomita, Y. Shimura, K. Kuga, Y. Matsumoto, S. Nakatsuji

Journal of Physics: Conference Series   683 ( 1 )   2016.2

Site-selective ¹¹B NMR studies on YbAlB<inf>4</inf>

S. Takano, M. S. Grbic, K. Kimura, M. Yoshida, M. Takigawa, E. C.T.O. Farrell, K. Kuga, S. Nakatsuji, H. Harima

Journal of Physics: Conference Series   683 ( 1 )   2016.2

Quantum Criticality Beneath the Superconducting Dome in β-YbAlB<inf>4</inf>

T. Tomita, K. Kuga, Y. Uwatoko, S. Nakatsuji

Journal of Physics: Conference Series   683 ( 1 )   2016.2

X-ray Absorption Spectroscopy in the Heavy Fermion Compound α-YbAlB4 at High Magnetic Fields

Taku T. Terashima, Yasuhiro H. Matsuda, Kentaro Kuga, Shintaro Suzuki, Yosuke Matsumoto, Satoru Nakatsuji, Akihiro Kondo, Koichi Kindo, Naomi Kawamura, Masaichiro Mizumaki, Toshiya Inami

Journal of the Physical Society of Japan   84 ( 11 )   114715-1 - 4   2015.11

Magnetic order in the frustrated ising quasi-one dimensional compound NaCo(acac)<inf>3</inf>·benzene

Yoshitomo Karaki, Kentaro Kuga, Kenta Kimura, Satoru Nakatsuji, Kazuyuki Matsubayashi, Yoshiya Uwatoko

Journal of the Physical Society of Japan   84 ( 8 )   084708-1 - 5   2015.8

Intact quasiparticles at an unconventional quantum critical point

M. L. Sutherland, E. C.T. O'Farrell, W. H. Toews, J. Dunn, K. Kuga, S. Nakatsuji, Y. Machida, K. Izawa, R. W. Hill

Physical Review B - Condensed Matter and Materials Physics   92 ( 4 )   2015.7

Conduction electron spin resonance in the α-Yb<inf>1-x</inf>xFe<inf>x</inf>AlB<inf>4</inf> (0≤x ≤0.50) and α-LuAlB<inf>4</inf>compounds

L. M. Holanda, G. G. Lesseux, E. T. Magnavita, R. A. Ribeiro, S. Nakatsuji, K. Kuga, Z. Fisk, S. B. Oseroff, R. R. Urbano, C. Rettori, P. G. Pagliuso

Journal of Physics Condensed Matter   27 ( 25 )   2015.7

Field evolution of quantum critical and heavy fermi-liquid components in the magnetization of the mixed valence compound &amp;β;-YbAlB4

Yosuke Matsumoto, Kentaro Kuga, Yoshitomo Karaki, Yasuyuki Shimura, Toshiro Sakakibara, Masashi Tokunaga, Koichi Kindo, Satoru Nakatsuji

Journal of the Physical Society of Japan   84 ( 2 )   024710-1 - 7   2015.2

Unconventional Quantum Criticality in β-YbAlB<inf>4</inf> Detached from Its Magnetically Ordered Phase

Takahiro Tomita, Kentaro Kuga, Yoshiya Uwatoko, Piers Coleman, Satoru Nakatsuji

Physics Procedia   75   482 - 487   2015

Magnetization of Yb-Based Mixed-Valent Compounds at Megagauss Fields

T. Terashima, Y. H. Matsuda, K. Kuga, Y. Matsumoto, S. Nakatsuji, K. Yoshimura, T. Nakahigashi

JPS Conference Proceedings   3   011027-1 - 5   2014.6

Two Magnetic Phases in alpha-YbAl1−xFexB4

Kentaro Kuga, Shintaro Suzuki, Satoru Nakatsuji

JPS Conference Proceedings   3   012013-1 - 4   2014.6

Suppression of the Heavy Fermion State in Magnetic Fields in the Mixed Valent alpha-YbAIB4

Yosuke Matsumoto, Kuga Kentaro, Satoru Nakatsuji

JPS Conference Proceedings   3   011076-1 - 5   2014.6

Superconducting Properties of the Ferroquadrupolar Cubic Gamma3 Compound PrTi2Al20

Akito Sakai, Kentaro Kuga, Satoru Nakatsuji

JPS Conference Proceedings   3   011066-1 - 6   2014.6

Structural and Magnetic Properties of alpha-Yb(Al1−xFex)B4 under Hydrostatic Pressure

Yui Sakaguchi, Shugo Ikeda, Kentaro Kuga, Satoru Nakatsuji, Naohisa Hirao, Yasuo Ohishi, Hisao Kobayashi

JPS Conference Proceedings   3   011059-1 - 6   2014.6

Anisotropic transverse magnetoresistivity in α-YbAlB<inf>4</inf>

Yosuke Matsumoto, Jinpyo Hong, Kentaro Kuga, Satoru Nakatsuji

Journal of Physics: Conference Series   592 ( 1 )   012086-1 - 6   2014

High pressure measurements of the resistivity of β-YbAlB<inf>4</inf>

T. Tomita, K. Kuga, Y. Uwatoko, S. Nakatsuji

Journal of Physics: Conference Series   592 ( 1 )   012019-1 - 5   2014

Synchrotron X-ray spectroscopy study on the valence state and magnetization in α-YbAl<inf>1-x</inf>Fe<inf>x</inf>B<inf>4</inf> (x =0.115) at low temperatures and high magnetic fields

T. Terashima, Y. H. Matsuda, K. Kuga, S. Suzuki, Y. Matsumoto, S. Nakatsuji, A. Kondo, K. Kindo, N. Kawamura, M. Mizumaki, T. Inami

Journal of Physics: Conference Series   592 ( 1 )   012020-1 - 6   2014

Chemical effects of high-resolution yblγ<inf>4</inf> emission spectra: A possible probe for chemical analysis

Hisashi Hayashi, Noriko Kanai, Naomi Kawamura, Yasuhiro H. Matsuda, Kentaro Kuga, Satoru Nakatsuji, Tetsuro Yamashita, Shigeo Ohara

X-Ray Spectrometry   42 ( 6 )   450 - 455   2013.11

Magnetic order induced by Fe doping in the intermediate valence system β-YbAlB<inf>4</inf>

K. Kuga, S. Nakatsuji

Journal of the Korean Physical Society   63 ( 3 )   549 - 550   2013.8

Mössbauer spectroscopy of Fe-doped valence-fluctuating α-YbAlB<inf>4</inf>

Yui Sakaguchi, Shugo Ikeda, Hisao Kobayashi, Kentaro Kuga, Keita Sone, Satoru Nakatsuji

Journal of the Korean Physical Society   62 ( 12 )   2146 - 2149   2013.7

Synchrotron X-ray spectroscopy study on the valence state in α- and β-YbAlB<inf>4</inf> at low temperatures and high magnetic fields

Y. H. Matsuda, T. Nakamura, K. Kuga, S. Nakatsuji, S. Michimura, T. Inami, N. Kawamura, M. Mizumaki

Journal of the Korean Physical Society   62 ( 12 )   1778 - 1781   2013.7

Conduction electron spin resonance in AlB₂

L M Holanda, L Mendonça-Ferreira, R A Ribeiro, J M Osorio-Guillén, G M Dalpian, K Kuga, S Nakatsuji, Z Fisk, R R Urbano, P G Pagliuso, C Rettori

Journal of Physics: Condensed Matter   25 ( 21 )   216001 - 216001   2013.5

Magnetic order induced by Fe substitution of Al site in the heavy-fermion systems α-YbAlB₄ and β-YbAlB₄

Kuga, K; Morrison, G; Treadwell, L; Chan, JY; Nakatsuji, S

PHYSICAL REVIEW B   86 ( 22 )   2012.12

Thermoelectric response near a quantum critical point of β-YbAlB <inf>4</inf> and YbRh <inf>2</inf>Si <inf>2</inf>: A comparative study

Y. MacHida, K. Tomokuni, C. Ogura, K. Izawa, K. Kuga, S. Nakatsuji, G. Lapertot, G. Knebel, J. P. Brison, J. Flouquet

Physical Review Letters   109 ( 15 )   156405-1 - 5   2012.10

Superconductivity in the ferroquadrupolar state in the quadrupolar kondo lattice PrTi <inf>2</inf>Al <inf>20</inf>

Akito Sakai, Kentaro Kuga, Satoru Nakatsuji

Journal of the Physical Society of Japan   81 ( 8 )   083702-1 - 4   2012.8

T/B scaling of magnetization in the mixed valent compound β-YbAlB <inf>4</inf>

Yosuke Matsumoto, S. Nakatsuji, K. Kuga, Y. Karaki, Y. Shimura, T. Sakakibara, A. H. Nevidomskyy, P. Coleman

Journal of Physics: Conference Series   391 ( 1 )   012041-1 - 4   2012

Anisotropic heavy-Fermi-liquid formation in valence-fluctuating α-YbAlB<inf>4</inf>

Yosuke Matsumoto, Kentaro Kuga, Takahiro Tomita, Yoshitomo Karaki, Satoru Nakatsuji

Physical Review B - Condensed Matter and Materials Physics   84 ( 12 )   125126-1 - 7   2011.9

Quantum critical kondo quasiparticles probed by ESR in β-YbAlB <inf>4</inf>

L. M. Holanda, J. M. Vargas, W. Iwamoto, C. Rettori, S. Nakatsuji, K. Kuga, Z. Fisk, S. B. Oseroff, P. G. Pagliuso

Physical Review Letters   107 ( 2 )   026402-1 - 4   2011.7

Anisotropic electrical transport in the heavy fermion compound α-YbAlB<inf>4</inf>

Kentaro Kuga, Yosuke Matsumoto, Naoki Horie, Satoru Nakatsuji

Journal of the Physical Society of Japan   80 ( SUPPL. A )   SA089-1 - 2   2011.7

Kondo lattice behavior in the valence fluctuating systems α- and β-YbAlB<inf>4</inf>

Yosuke Matsumoto, Kentaro Kuga, Naoki Horie, Satoru Nakatsuji

Journal of the Physical Society of Japan   80 ( SUPPL. A )   SA090-1 - 3   2011.7

Thermoelectric coefficients of the quantum critical β-YbAlB <inf>4</inf>

Y. Machida, C. Ogura, K. Izawa, K. Kuga, S. Nakatsuji

Journal of the Physical Society of Japan   80 ( SUPPL. A )   SA088-1 - 3   2011.7

NMR/NQR and Specific Heat Studies of Iron Pnictide Superconductor KFe₂As₂

H. Fukazawa, T. Saito, Y. Yamada, K. Kondo, M. Hirano, Y. Kohori, K. Kuga, A. Sakai, Y. Matsumoto, S. Nakatsuji, K. Kihou, A. Iyo, C. H. Lee, H. Eisaki

Journal of the Physical Society of Japan   80 ( Suppl.A )   SA118 - SA118   2011.7

Low temperature magnetic properties of Pr(Cu,Ga)<inf>13</inf> with orbitally degenerate ground state

Yasuyuki Shimura, Toshiro Sakakibara, Kentaro Kuga, Jung Young Cho, Julia Y. Chan

Journal of the Physical Society of Japan   80 ( SUPPL. A )   SA072-1 - 3   2011.7

Local moment behaviors of the valence fluctuating systems β-YbAlB <inf>4</inf> and α-YbAlB<inf>4</inf>

Y. Matsumoto, K. Kuga, N. Horie, S. Nakatsuji

Journal of Physics: Conference Series   273 ( 1 )   012006-1 - 4   2011

Low-temperature magnetic properties of Pr(Cu,Ga)<inf>12.85</inf>

Y. Shimura, T. Sakakibara, K. Kuga, J. Y. Cho, J. Y. Chan

Journal of Physics: Conference Series   273 ( 1 )   012054-1 - 4   2011

Strong valence fluctuation in the quantum critical heavy fermion superconductor β-YbAlB4: A hard x-ray photoemission study

M. Okawa, M. Matsunami, K. Ishizaka, R. Eguchi, M. Taguchi, A. Chainani, Y. Takata, M. Yabashi, K. Tamasaku, Y. Nishino, T. Ishikawa, K. Kuga, N. Horie, S. Nakatsuji, S. Shin

Physical Review Letters   104 ( 24 )   247201-1 - 4   2010.6

Low-temperature magnetization of the quantum critical heavy fermion superconductor β-YbAlB<inf>4</inf>

Yosuke Matsumoto, Kentaro Kuga, Yoshitomo Karaki, Takahiro Tomita, Satoru Nakatsuji

Physica Status Solidi (B) Basic Research   247 ( 3 )   720 - 722   2010.3

Pronounced non-fermi-liquid behavior of the quantum critical heavy fermion superconductor β-YbAlB<inf>4</inf>

Satoru Nakatsuji, Kentaro Kuga, Takahiro Tomita, Yosuke Matsumoto

Physica Status Solidi (B) Basic Research   247 ( 3 )   485 - 489   2010.3

Crystal growth, structure, and physical properties of Ln(Cu,Al)<inf>12</inf>(Ln = y , Ce, Pr, Sm, and Yb) and Ln(Cu,Ga)<inf>12</inf> (Ln = Y, Gd-Er, and Yb)

Brenton L. Drake, C. Capan, Jung Young Cho, Y. Nambu, K. Kuga, Y. M. Xiong, A. B. Karki, S. Nakatsuji, P. W. Adams, D. P. Young, Julia Y. Chan

Journal of Physics Condensed Matter   22 ( 6 )   2010.2

Possible multiple gap superconductivity with line nodes in heavily hole-doped superconductor KFe <inf>2</inf>As <inf>2</inf> studied by <inf>75</inf>As nuclear quadrupole resonance and specific heat

Hideto Fukazawa, Yuji Yamada, Kenji Kondo, Taku Saito, Yoh Kohori, Kentarou Kuga, Yosuke Matsumoto, Satoru Nakatsuji, Hijiri Kito, Parasharam M. Shirage, Kunihiro Kihou, Nao Takeshita, Chul Ho Lee, Akira Iyo, Hiroshi Eisaki

Journal of the Physical Society of Japan   78 ( 8 )   083712-1 - 4   2009.8

Crystal growth, structure, and physical properties of Ln(Cu,Ga) <inf>3-x</inf>(Ln=La-Nd, Eu; x≈0.2)

Jung Young Cho, Evan L. Thomas, Yusuke Nambu, Cigdem Capan, Amar B. Karki, David P. Young, Kentarou Kuga, Satoru Nakatsuji, Julia Y. Chan

Chemistry of Materials   21 ( 14 )   3072 - 3078   2009.7

Role of f electrons in the fermi surface of the heavy fermion superconductor β-YbAlB4

E. C.T. O'Farrell, D. A. Tompsett, S. E. Sebastian, N. Harrison, C. Capan, L. Balicas, K. Kuga, A. Matsuo, K. Kindo, M. Tokunaga, S. Nakatsuji, G. Csányi, Z. Fisk, M. L. Sutherland

Physical Review Letters   102 ( 21 )   216402-1 - 4   2009.5

Crystal growth, transport, and magnetic properties of YbCoGa <inf>5</inf>

Edem K. Okudzeto, Kentarou Kuga, Satoru Nakatsuji, Julia Y. Chan

Crystal Growth and Design   9 ( 4 )   1956 - 1959   2009.4

Crystal structure and physical properties of polymorphs of LnAlB <inf>4</inf> (Ln = Yb, Lu)

Robin T. Macaluso, Satoru Nakatsuji, Kentaro Kuga, Evan Lyle Thomas, Yo Machida, Yoshiteru Maeno, Zachary Fisk, Julia Y. Chan

Chemistry of Materials   19 ( 8 )   1918 - 1922   2007.4

共鳴硬X線光電子分光による価数揺動系物質β-YbAlB₄およびα-YbAlB₄の電子構造研究

姫野良介, 久我健太郎, 藤原秀紀, 浜本諭, 保井晃, 雀部矩正, 柴垣善則, 河村直己, 池永英司, 水牧仁一朗, 筒井智嗣, 木須孝幸, 三村功次郎, 関山明

日本放射光学会年会・放射光科学合同シンポジウム(Web)   33rd   2020

Magnetic circular dichroism of iron in hard X-ray photoemission spectroscopy under a magnetic field

Kondo Y., Fujiwara H., Hamamoto S., Kanai-Nakata Y., Kawada M., Takano S., Kuga K., Kiss T., Higashiya A., Yamasaki A., Imada M., Tanaka A., Tamasaku K., Yabashi M., Ishikawa T., Sekiyama A.

Meeting Abstracts of the Physical Society of Japan   74 ( 2 )   1241 - 1241   2019

Determination of the ground-state 4f symmetry of YbNi₂Ge₂ by linear dichroism in angle resolved core-level photoemission spectroscopy

Kashiuchi T., Kanai Y., Hamamoto S., Fujiwara H., Kuga K., Kiss T., Higashiya A., Yamasaki A., Imada S., Tanaka A., Tamasaku K., Yabashi M., Ishikawa T., Ebihara T., Sekiyama A.

Meeting Abstracts of the Physical Society of Japan   74 ( 1 )   1994 - 1994   2019

立方晶PrB₆におけるPr4f電子状態を反映した磁場中硬X線内殻光電子線二色性の観測

浜本諭, 浜本諭, 金井惟奈, 金井惟奈, 藤原秀紀, 藤原秀紀, 木須孝幸, 木須孝幸, 久我健太郎, 東谷篤志, 東谷篤志, 山崎篤志, 山崎篤志, 今田真, 今田真, 田中新, 玉作賢治, 矢橋牧名, 石川哲也, 関山明, 関山明

日本放射光学会年会・放射光科学合同シンポジウム(Web)   32nd   2019

Observation of Pr 4f electronic state in incommensurate antiferromagnetic phase of PrB₆ probed by linear dichroism in core level photoemission under a magnetic field

Hamamoto Satoru, Kanai Y., Fujiwara H., Kiss T., Kuga K., Higashiya A., Yamasaki A., Imada S., Tanaka A., Tamasaku K., Yabashi M., Ishikawa T., Sekiyama A.

Meeting Abstracts of the Physical Society of Japan   74 ( 1 )   2216 - 2216   2019

硬X線光電子分光を用いた希土類化合物CeAgSb₂の基底状態における電子状態の解明

近藤佑宥, 近藤佑宥, 金井惟奈, 金井惟奈, 濱本諭, 濱本諭, 藤原秀紀, 藤原秀紀, 川田萌樹, 川田萌樹, 樫内利幸, 樫内利幸, 高野彩佳, 高野彩佳, 久我健太郎, 木須孝幸, 木須孝幸, 東谷篤志, 東谷篤志, 門野利治, 門野利治, 今田真, 今田真, 田中新, 玉作賢治, 矢橋牧名, 石川哲也, 海老原孝雄, 関山明, 関山明

日本放射光学会年会・放射光科学合同シンポジウム(Web)   32nd   2019

Ground state local 4f symmetry in the tetragonal strongly correlated Ce compounds probed by polarized hard x-ray photoemission spectroscopy

Fujiwara H., Kondo Y., Hamamoto S., Kawada M., Aratani H., Nakatani Y., Kanai-Nakata Y., Kuga K., Kiss T., Yamasaki A., Higashiya A., Kadono T., Imada S., Tanaka A., Tamasaku K., Yabashi M., Ishikawa T., Yasui A., Saitoh Y., Ebihara T., Sekiyama A.

Meeting Abstracts of the Physical Society of Japan   74 ( 2 )   1554 - 1554   2019

Electronic structure of half-metallic Heusler alloy Co2MnSi probed by linear polarized hard x-ray photoemission spectroscopy

Nishimoto K., Fujiwara H., Kanai-Nakata Y., Hamamoto S., Kuga K., Kiss T., Kadono T., Imada S., Higashiya A., Yamasaki A., Tamasaku K., Yabashi M., Ishikawa T., Suga S., Umetsu R. Y., Sekiyama A.

Meeting Abstracts of the Physical Society of Japan   74 ( 2 )   1240 - 1240   2019

Crystalline Electric Field Ground State and Effect of Anisotropic Hybridization in YbAlB₄ Probed by Linear Dichroism in Core-Level Hard X-ray Photoemission Spectroscopy

Kuga K., Kanai Y., Fujiwara H., Yamagami K., Hamamoto S., Aoyama Y., Sekiyama A., Higashiya A., Kadono T., Imada S., Yamasaki A., Tanaka A., Tamasaku K., Yabashi M., Ishikawa T., Nakatsuji S., Kiss T.

Meeting Abstracts of the Physical Society of Japan   74 ( 1 )   2221 - 2221   2019

Electronic structure of the quantum critical material beta-YbAlB₄ probed by resonant hard x-ray photoemission spectroscopy

Himeno R., Kuga K., Fujiwara H., Hamamoto S., Yasui A., Sasabe N., Sibagaki Y., Kawamura N., Ikenaga E., Mizumaki M., Tsutsui S., Kiss T., Mimura K., Sekiyama A.

Meeting Abstracts of the Physical Society of Japan   74 ( 2 )   1902 - 1902   2019

Observation of heterogeneous valence fluctuations in Yb₅Si₃

Matsunami M., Kuga K., Iizuka T., Takeuchi T.

Meeting Abstracts of the Physical Society of Japan   74 ( 2 )   1787 - 1787   2019

Determination of the 4f ground-state symmetry of a heavy fermion compound CeRu₂Si₂ by linear dichroism in hard X-ray core-level photoemission spectroscopy

Kawada M., Nakatani Y., Aratani H., Kanai Y., Hamamoto S., Kondo H., Fujiwara H., Kuga K., Kiss T., Yamasaki A., Tanaka A., Tamasaku K., Yabashi M., Higashiya A., Isikawa T., Kadono T., Imada S., Ōnuki Y., Aoki D., Sekiyama A.

Meeting Abstracts of the Physical Society of Japan   74 ( 1 )   1961 - 1961   2019

Electronic States of Na-Si Clathrate of Type2 Studied by X-ray Photoemission Spectroscopy

Ishida T., Terashima D., Kadono T., Fujiwara H., Sekiyama A., Kuga K., Higashiya A., Yamasaki A., Sakamoto K., Kobayashi Y., Chishima M., Kanai Y., Hamamoto S., Nakagawa K., Tamasaku K., Yabashi M., Ishikawa T., Morito H., Imada S.

Meeting Abstracts of the Physical Society of Japan   74 ( 1 )   1562 - 1562   2019

角度分解内殻光電子線二色性を用いた価数揺動物質YbNi₂Ge₂における4f基底状態対称性の決定

樫内利幸, 樫内利幸, 金井惟奈, 金井惟奈, 濱本諭, 濱本諭, 藤原秀紀, 藤原秀紀, 久我健太郎, 木須孝幸, 木須孝幸, 東谷篤志, 東谷篤志, 山崎篤志, 山崎篤志, 門野利治, 門野利治, 今田真, 今田真, 田中新, 玉作賢治, 矢橋牧名, 石川哲也, 海老原孝雄, 関山明, 関山明

日本放射光学会年会・放射光科学合同シンポジウム(Web)   32nd   2019

軟X線光電子分光による量子臨界物質YbCo₂Ge₄の電子状態分析

久我健太郎, 濱本諭, 濱本諭, 中谷泰博, 中谷泰博, 大浦正樹, 北川健太郎, 木須孝幸, 木須孝幸

日本放射光学会年会・放射光科学合同シンポジウム(Web)   32nd   2019

Physical properties of heavy fermion compound α-YbAlB₄ at low temperatures with external magnetic fields Ⅱ

Kitagawa H., Oura M., Ikeda S., Tanaka Y., Tamasaku K., Masuda R., Kobayashi Y., Seto M., Yoda Y., Suzuki S., Kuga K., Nakatsuji S., Kobayashi H.

Meeting Abstracts of the Physical Society of Japan   74 ( 1 )   1992 - 1992   2019

Soft X-ray photoemission spectroscopy study of quantum critical material YbCo₂Ge₄

Kuga K., Hamamoto S., Nakatani Y., Oura M., Kitagawa K., Kiss T.

Meeting Abstracts of the Physical Society of Japan   73 ( 2 )   1883 - 1883   2018

Polarization Dependence in Ce 3d Core-Level Photoemission Spectroscopy of CeRh₃B₂

Kobayashi Yoshiyuki, Terashima Daiki, Chishima Masahiro, Hamamoto Satoru, Nakagawa Koya, Tamasaku Kenji, Yabashi Makina, Ishikawa Tetsuya, Sugawara Hitoshi, Imada Shin, Kadono Toshiharu, Sekiyama Akira, Kanai Yuina, Kuga Kentaro, Higashiya Atsushi, Yamasaki Atsushi, Fujiwara Hidenori, Sakamoto Kohei

Meeting Abstracts of the Physical Society of Japan   73 ( 2 )   1022 - 1022   2018

Ground- and excited-state 4f-orbital symmetry of cubic CeAl₂ observed by linear dichroism in core-level photoemission spectroscopy

Kanai Yuina, Kuga K., Higashiya A., Kadono T., Imada S., Ebihara T., Sekiyama A., Hamamoto S., Takano S., Fujiwara H., Kiss T., Tanaka A., Tamasaku K., Yabashi M., Ishikawa T.

Meeting Abstracts of the Physical Society of Japan   73 ( 2 )   1854 - 1854   2018

Synchrotron radiation based ¹⁷⁴Yb Mössbauer spectroscopic study of YbAlB₄ under pressure at low temperature

Kobayashi H., Kuga K., Nakatsuji S., Ohura M., Ikeda S., Masuda R., Kobayashi Y., Seto M., Tamasaku K., Yoda Y., Suzuki S.

Meeting Abstracts of the Physical Society of Japan   73 ( 1 )   2006 - 2006   2018

YbNi₂Ge₂の4f基底状態軌道対称性を反映した硬X線内殻光電子線二色性の観測

樫内利幸, 樫内利幸, 金井惟奈, 金井惟奈, 青山雄一, 青山雄一, 濱本諭, 濱本諭, 山神光平, 山神光平, 藤原秀紀, 藤原秀紀, 久我健太郎, 木須孝幸, 木須孝幸, 東谷篤志, 東谷篤志, 山崎篤志, 山崎篤志, 門野利治, 門野利治, 今田真, 今田真, 田中新, 玉作賢治, 矢橋牧名, 石川哲也, 海老原孝雄, 関山明, 関山明

日本放射光学会年会・放射光科学合同シンポジウム(Web)   31st   2018

X線光電子分光法を用いたNa-Siクラスレートの電子状態の研究

寺島大貴, 寺島大貴, 門野利治, 門野利治, 森本千香子, 森本千香子, 阪本紘平, 阪本紘平, 小林慶行, 小林慶行, 濱本諭, 濱本諭, 金井惟奈, 金井惟奈, 山神光平, 山神光平, 久我健太郎, 東谷篤志, 東谷篤志, 山崎篤志, 山崎篤志, 藤原秀紀, 藤原秀紀, 関山明, 関山明, 玉作賢治, 矢橋牧名, 石川哲也, 森戸春彦, 今田真, 今田真

日本物理学会講演概要集(CD-ROM)   73 ( 1 )   2018

異常金属相を持つ重い電子系β-YbAlB₄における圧力相図の解明

冨田崇弘, 冨田崇弘, 高橋博樹, 久我健太郎, 上床義也, 中辻知

KEK Progress Report (Web)   ( 2018-7 )   2018

Physical properties of heavy fermion compound α-YbAlB₄ at low temperature with magnetic fields

Oura M., Kuga K., Nakatsuji S., Kobayashi H., Ikeda S., Tanaka Y., Tamasaku K., Masuda R., Kobayashi Y., Seto M., Yoda Y., Suzuki S.

Meeting Abstracts of the Physical Society of Japan   73 ( 0 )   2136 - 2136   2018

重い電子系化合物α-YbAlB₄の低温における磁場下物性

大浦桃子, 大浦桃子, 池田修悟, 池田修悟, 池田修悟, 田中良和, 玉作賢治, 増田亮, 小林康浩, 瀬戸誠, 依田芳卓, 鈴木慎太郎, 久我健太郎, 中辻知, 小林寿夫, 小林寿夫, 小林寿夫

日本物理学会講演概要集(CD-ROM)   73 ( 1 )   2018

Observation of Pr 4f electronic state probed by Linear dichroism in core level photoemission of cubic PrB₆ under a magnetic field

Hamamoto Satoru, Tamasaku K., Yabashi M., Ishikawa T., Sekiyama A., Kanai Y., Fujiwara H., Kiss T., Kuga K., Higashiya A., Yamasaki A., Imada S., Tanaka A.

Meeting Abstracts of the Physical Society of Japan   73 ( 2 )   1846 - 1846   2018

Observation of 4f electronic orbital symmetry of heavy fermionic superconductor with broken space inversion symmetry CeIrSi₃ by linear dichroism in core-level photoemission

Kadono Toshiharu, Higashiya A., Yamasaki A., Fujiwara H., Sekiyama A., Tamasaku K., Yabashi M., Ishikawa T., Settai R., Imada S., Sakamoto K., Kobayashi Y., Terashima D., Kanai Y., Hamamoto S., Nakagawa K., Kuga K.

Meeting Abstracts of the Physical Society of Japan   73 ( 1 )   1513 - 1513   2018

重い電子系量子臨界物質YbCo₂Ge₄におけるYb3d内殻光電子スペクトル線二色性

久我健太郎, 金井惟奈, 金井惟奈, 藤原秀紀, 藤原秀紀, 藤岡修平, 藤岡修平, 山神光平, 山神光平, 右衛門佐寛, 右衛門佐寛, 青山雄一, 青山雄一, 関山明, 関山明, 東谷篤志, 東谷篤志, 門野利治, 門野利治, 今田真, 今田真, 山崎篤志, 山崎篤志, 玉作賢治, 矢橋牧名, 石川哲也, 北川健太郎, 松林和幸, 木須孝幸, 木須孝幸

日本放射光学会年会・放射光科学合同シンポジウム(Web)   30th   2017

Hard X-ray Photoemission Spectroscopy of 6H-SrIrO₃

Nakagawa K., Kadono T., Imada S., Tamasaku K., Yabashi M., Ishikawa T., Takase K., Yamasaki A., Hamamoto S., Fujioka S., Kanai Y., Yamagami K., Kuga K., Fujiwara H., Sekiyama A., Higashiya A.

Meeting Abstracts of the Physical Society of Japan   72 ( 1 )   1582 - 1582   2017

Bulk Jeff states of Sr-based iridates studied by cluster-model calculations

Nakagawa K., Imada S., Saitoh Y., Horiba K., Kumigashira H., Tamasaku K., Yabashi M., Ishikawa T., Takase K., Yamasaki A., Hamamoto S., Kanai Y., Yamagami K., Kuga K., Fujiwara H., Sekiyama A., Higashiya A., Kadono T.

Meeting Abstracts of the Physical Society of Japan   72 ( 2 )   1211 - 1211   2017

Linear dichroism of Yb 3d core level photoelectron spectrum in valence fluctuating compound YbAlB₄

Kuga K., Kadono T., Imada S., Yamasaki A., Tamasaku K., Yabashi M., Ishikawa T., Nakatsuji S., Kiss T., Kanai Y., Fujiwara H., Fujioka S., Yamagami K., Hamamoto S., Aoyama Y., Sekiyama A., Higashiya A.

Meeting Abstracts of the Physical Society of Japan   72 ( 2 )   1734 - 1734   2017

重い電子系化合物α-YbAlB₄の低温における圧力・磁場下物性

大浦桃子, 池田修悟, 池田修悟, 増田亮, 小林康浩, 瀬戸誠, 依田芳卓, 平尾直久, 河口沙織, 大石泰生, 鈴木慎太郎, 久我健太郎, 中辻知, 小林寿夫, 小林寿夫

日本物理学会講演概要集(CD-ROM)   72 ( 1 )   2017

Physical properties of heavy fermion compound α-YbAlB₄ at low temperature under pressure and magnetic fields Ⅱ

Oura M., Suzuki S., Kuga K., Nakatsuji S., Kobayashi H., Ikeda S., Masuda R., Kobayashi Y., Seto M., Yoda Y., Hirao N., Kawaguchi S. I., Ohishi Y.

Meeting Abstracts of the Physical Society of Japan   72 ( 0 )   1735 - 1735   2017

重い電子系化合物α-YbAlB₄の低温における圧力・磁場下物性 II

大浦桃子, 池田修悟, 池田修悟, 増田亮, 小林康浩, 瀬戸誠, 依田芳卓, 平尾直久, 河口沙織, 大石泰生, 鈴木慎太郎, 久我健太郎, 中辻知, 小林寿夫, 小林寿夫

日本物理学会講演概要集(CD-ROM)   72 ( 2 )   2017

Physical properties of heavy fermion compound !LaTeX${\alpha}$-YbAlB₄ at low temperature under pressure and magnetic fields

Oura M., Suzuki S., Kuga K., Nakatsuji S., Kobayashi H., Ikeda S., Masuda R., Kobayashi Y., Seto M., Yoda Y., Hirao N., Kawaguchi S. I., Oishi Y.

Meeting Abstracts of the Physical Society of Japan   72 ( 0 )   2033 - 2033   2017

21pBM-1 Surface impedance measurements of β-YbAlB_4 using a tunnel-diode oscillation method under high pressure and high magnetic fields

Tahara T., Kida T., Kuga K., Nakatsuji S., Kagayama T., Shimizu K., Hagiwara M.

Meeting Abstracts of the Physical Society of Japan   71 ( 1 )   2298 - 2298   2016

Linear dichroism of Yb 3d core level photoelectron spectrum in orthorhombic compound YbCo₂Ge₄

Kuga K., Kadono T., Imai S., Yamasaki A., Tamasaku K., Yabashi M., Ishikawa T., Kitagawa K., Matsubayashi K., Kiss T., Kanai Y., Fujiwara H., Fujioka S., Yamagami K., Yomosa H., Aoyama Y., Sekiyama A., Higashiya A.

Meeting Abstracts of the Physical Society of Japan   71 ( 2 )   2120 - 2120   2016

21pPSA-2 Investigation of electronic structures in the layered oxypnictide LaOMnAs by means of polarization-dependent photoelectron spectroscopy with hard x-ray

Higashiya A., Abozeed Amina, Kadono T., Imada S., Kuga K., Yabashi M., Tamasaku K., Ishikawa T., Takase K., Nakagawa K., Yamasaki A., Nagai K., Fujioka S., Kanai Y., Yamagami K., Fujiwara H., Sekiyama A.

Meeting Abstracts of the Physical Society of Japan   71 ( 1 )   1563 - 1563   2016

Unconventional Quantum Criticality in β-YbAlB<inf>4</inf> Detached from Its Magnetically Ordered Phase

Takahiro Tomita, Kentaro Kuga, Yoshiya Uwatoko, Piers Coleman, Piers Coleman, Satoru Nakatsuji

Physics Procedia   75   482 - 487   2015.1

22pBA-2 Magnetization and XMCD of heavy fermion α-YbAl_<1-x>Fe_xB_4 at high magnetic fields

Terashima T., Mizumaki M., Inami T., Matsuda Y. H., Kondo A., Kindo K., Suzuki S., Kuga K., Matsumoto Y., Nakatsuji S., Kawamura N.

Meeting Abstracts of the Physical Society of Japan   70 ( 0 )   2219 - 2219   2015

22pBA-3 Magnetism and transport properties of single crystal α-YbAl_<1-x>Mn_xB_4

Suzuki S., Shimura Y., Kuga K., Tomita T., Matsumoto Y., Nakatsuji S.

Meeting Abstracts of the Physical Society of Japan   70 ( 0 )   2220 - 2220   2015

22aBJ-2 High-field magnetism of the S=1/2 random triangular lattice antiferromagnet In_2Ga_2CuO_7

Okutani A., Broholm C., Hagiwara M., Kuga K., Nakano T., Nozue Y., Kimura K., Halim M., Nakatsuji S., Higemoto W., Ito T. U.

Meeting Abstracts of the Physical Society of Japan   70 ( 1 )   1163 - 1163   2015

強磁場における重い電子系α-YbAl_1-xFe_xB₄の磁化とX線磁気円二色性

寺島拓, 松田康弘, 近藤晃弘, 金道浩一, 鈴木慎太郎, 久我健太郎, 松本洋介, 中辻知, 河村直己, 水牧仁一朗, 稲見俊哉

日本物理学会講演概要集(CD-ROM)   70 ( 1 )   2015

18aDA-6 X-yay Absorption Spectroscopic Study of β-YbAlB_4 Under Multi Extreme Conditions III

Sakaguchi Y., Ikeda S., Kawamura N., Mizumaki M., Ishimatsu N., Suzuki S., Kuga K., Nakatsuji S., Kobayashi H.

Meeting Abstracts of the Physical Society of Japan   70 ( 2 )   1981 - 1981   2015

22pBA-1 X-yay Absorption Spectroscopic Study of β-YbAlB_4 Under Multi Extreme Conditions II

Sakaguchi Y., Ikeda S., Kawamura N., Mizumaki M., Suzuki S., Kuga K., Nakatsuji S., Ishimatsu N., Kobayashi H.

Meeting Abstracts of the Physical Society of Japan   70 ( 1 )   2218 - 2218   2015

単結晶α-YbAl_1-xMn_xB₄における磁気物性と輸送特性

鈴木慎太郎, 志村恭通, 久我健太郎, 冨田崇弘, 松本洋介, 中辻知

日本物理学会講演概要集(CD-ROM)   70 ( 1 )   2015

28aBE-6 Quantum Critical Phenomena in the Heavy Fermion Valence Fluctuating System α-YbAl_<1-x>Fe_xB_4

Kuga K., Matsumoto Y., Suzuki S., Nakatsuji S.

Meeting abstracts of the Physical Society of Japan   69 ( 1 )   583 - 583   2014.3

10aBD-1 Low Temperature Specific Heat Studies of Valence Fluctuating α-YbAl_<1-x>Fe_xB_4

Matsumoto Y., Kuga K., Nakatsuji S.

Meeting Abstracts of the Physical Society of Japan   69 ( 0 )   448 - 448   2014

28aCM-6 Low Temperature Thermodynamics Properties of Ba_3CuSb_2O_9

HALIM Mario

Meeting Abstracts of the Physical Society of Japan   69   591 - 591   2014

28aBE-7 Magnetization and valence state in Yb-based heavy fermion compounds α-YbAl_<1-x>Fe_xB_4 at high magnetic fields II

Terashima T., Inami T., Matsuda Y. H., Kondo A., Kindo K., Kuga K., Matsumoto Y., Nakatsuji S., Kawamura N., Mizumaki M.

Meeting Abstracts of the Physical Society of Japan   69 ( 0 )   584 - 584   2014

28aBE-4 Magnetism and transport in the intermediate valence system α-YbAl_<1-x>Mn_xB_4

Suzuki S., Sone K., Kuga K., Shimura Y., Matsumoto Y., Nakatsuji S.

Meeting Abstracts of the Physical Society of Japan   69 ( 0 )   583 - 583   2014

10aBD-4 Composition dependence of transport properties in the intermediate valence system α-YbAl_<1-x>Mn_xB_4

Suzuki S., Shimura Y, Kuga K., Tomita T., Matsumoto Y., Nakatsuji S.

Meeting Abstracts of the Physical Society of Japan   69 ( 0 )   448 - 448   2014

27aPS-72 Spin glass transition in single crystal of Mn alloys

Iritani K., Higo T., Kuga K., Nugroho A. A., Nakatsuji S.

Meeting Abstracts of the Physical Society of Japan   69 ( 1 )   491 - 491   2014

8aPS-83 X-yay Absorption Spectroscopic Study of β-YbAlB_4 Under Multi Extreme Conditions

Sakaguchi Y., Ikeda S., Kawamura N., Mizumaki M., Suzuki S., Kuga K., Nakatsuji S., Ishimatsu N., Kobayashi H.

Meeting Abstracts of the Physical Society of Japan   69 ( 2 )   376 - 376   2014

価数揺動系α-YbAl_1-xMn_xB₄の磁性と伝導

鈴木慎太郎, 曾根啓太, 久我健太郎, 志村恭通, 松本洋介, 中辻知

日本物理学会講演概要集   69 ( 1 )   2014

価数揺動系α-YbAl_1-xMn_xB₄における輸送特性の組成依存性

鈴木慎太郎, 志村恭通, 久我健太郎, 冨田崇弘, 松本洋介, 中辻知

日本物理学会講演概要集   69 ( 2 )   2014

価数揺動系α-YbAl_1-xFe_xB₄の極低温比熱測定

松本洋介, 久我健太郎, 中辻知

日本物理学会講演概要集   69 ( 2 )   2014

28aBE-3 Pressure-induced Electronic State Change of Yb ions at Low Temperature in Valence Fluctuating β-YbAlB_4

Sakaguchi Y., Ishimatsu N., Kobayashi H., Ikeda S., Kawamura N., Mizumaki M., Hirao N., Ohishi Y., Suzuki S., Kuga K., Nakatsuji S.

Meeting Abstracts of the Physical Society of Japan   69 ( 1 )   583 - 583   2014

価数揺動物質α-YbAl_1-xFe_xB₄(x=0.014)における電子臨界現象

久我健太郎, 久我健太郎, 松本洋介, 鈴木慎太郎, 中辻知

日本物理学会講演概要集   69 ( 1 )   2014

重い電子系α-YbAl_1-xFe_xB₄の強磁場磁化過程と価数 II

寺島拓, 松田康弘, 近藤晃弘, 金道浩一, 久我健太郎, 松本洋介, 中辻知, 河村直己, 水牧仁一朗, 稲見俊哉

日本物理学会講演概要集   69 ( 1 )   2014

10aBD-3 NMR studies on heavy fermion compounds β-LnAlB_4 (Ln=Yb, Lu) III

Takano Shun, Grbic M. S., Yoshida M., Takigawa M., Suzuki S., O'Farrell E. C. T., Kuga K., Nakatsuji S.

Meeting Abstracts of the Physical Society of Japan   69 ( 2 )   448 - 448   2014

28aBE-2 NMR studies on heavy fermion compounds β-LnAlB_4 (Ln=Yb, Lu) II

Takano Shun, Grbic M.S., Yoshida M., Takigawa M., Suzuki S., O'Farrell E.C.T., Kuga K., Nakatsuji S.

Meeting Abstracts of the Physical Society of Japan   69 ( 1 )   582 - 582   2014

28aBE-5 Fe-doping Effect and the Quantum Criticality of Heavy Fermion System β-YbAlB_4

Tomita T., Kuga K., Matsumoto Y., Nakatsuji S., Matsubayashi K., Uwatoko Y.

Meeting Abstracts of the Physical Society of Japan   69 ( 1 )   583 - 583   2014

10aBD-2 Magnetization of heavy fermion α-YbAlB_4 at high magnetic fields

Terashima T., Matsuda Y. H., Kondo A., Kindo K., Suzuki S., Kuga K., Matsumoto Y., Nakatsuji S.

Meeting Abstracts of the Physical Society of Japan   69 ( 2 )   448 - 448   2014

26aKQ-2 Synthesis and Characterization of Ba_3CuSb_2O_9 Single Crystal

HALIM Mario

Meeting Abstracts of the Physical Society of Japan   68 ( 2 )   499 - 499   2013.8

Single crystal study of low temperature magnetism of the intermediate valence system α-Yb(Al,Mn)B_4

Suzuki S., Sone K., Kuga K., Shimura Y., Matsumoto Y., Nakatsuji S.

Meeting abstracts of the Physical Society of Japan   68 ( 2 )   541 - 541   2013.8

26pEB-2 NMR study of heavy-fermion system α-YbAlB_4

GRBIC M.S., KIMURA K., YOSHIDA M., TAKIGAWA M., KUGA K., NAKATSUJI S.

Meeting abstracts of the Physical Society of Japan   68 ( 2 )   540 - 540   2013.8

28pXA-8 Hall effect measurements of the quantum critical and valence fluctuating β-YbAlB_4 under pressure

O'Farrell E. C. T., Kuga K., Matsumoto Y., Matsubayashi K., Tomita T., Uwatoko Y., Nakatsuji S.

Meeting abstracts of the Physical Society of Japan   68 ( 1 )   670 - 670   2013.3

29pXY-4 ESR in single crystals of Ba_3CuSb_2O_9 (hexagonal)

Han Y., Hagiwara M., Kuga K., Kimura K., Nakatsuji S., Nakano T., Nozue Y.

Meeting abstracts of the Physical Society of Japan   68 ( 1 )   726 - 726   2013.3

29pXY-5 ESR in single crystals of Ba_3CuSb_2O_9 (orthorhombic)

Hagiwara M., Han Y., Kuga K., Kimura K., Nakatsuji S., Nakano T., Nozue Y.

Meeting abstracts of the Physical Society of Japan   68 ( 1 )   726 - 726   2013.3

Magnetization process of Yb-based heavy fermion compounds α-YbAl_<1-x>Fe_xB_4 in high magnetic fields

Terashima T., Matsuda Y.H., Kondo A., Kindo K., Kuga K., Matsumoto Y., Nakatsuji S.

Meeting Abstracts of the Physical Society of Japan   68 ( 0 )   541 - 541   2013

28pXA-9 Quantum Critical Phenomena and Pressure phase diagram in β-YbAlB_4

Tomita T., Ebata M., Takaahshi T., Kuga K., Matsumoto Y., Nakatsuji S., Matsubayashi K., Uwatoko Y.

Meeting Abstracts of the Physical Society of Japan   68 ( 0 )   670 - 670   2013

28pXA-11 ^<174>Yb Mossbauer Spectroscopic Study of YbAlB_4 using synchrotron radiation

Sakaguchi Y., Ikeda S., Masuda R., Kobayashi Y., Seto M., Yoda Y., Kuga K., Nakatsuji S., Kobayashi H.

Meeting Abstracts of the Physical Society of Japan   68 ( 0 )   671 - 671   2013

27aPS-42 Magnetism and thermal expansion in the valence fluctuating compound a-YbAl_<1-x>T_xB_4 (T: Transition metal)

Sone K., Kuga K., Kimura K., Matsumoto Y., Nakatsuji S.

Meeting Abstracts of the Physical Society of Japan   68 ( 0 )   619 - 619   2013

Ba₃CuSb₂O₉の強磁場多周波ESR

萩原政幸, HAN Y., 木村健太, 久我健太郎, 中辻知, 中野岳仁, 野末泰夫

日本物理学会講演概要集   68 ( 2 )   2013

28pXA-14 Magnetic Field Evolution of the Heavy Fermion State in YbAlB_4 Studied by Low Temperature Specific Heat Measurements

Matsumoto Y, Hong J., Kuga K., Nakatsuji S.

Meeting Abstracts of the Physical Society of Japan   68 ( 1 )   671 - 671   2013

29pXY-8 Magnetic order and frustration in spinel sulfides AYb_2S_4(A=Cd,Mg)

Iritani K., Halim Mario, Sakai A., Kuga K., Kimura K., Karaki Y., Nakatsuji S.

Meeting Abstracts of the Physical Society of Japan   68 ( 1 )   727 - 727   2013

価数揺動系α-YbAl_1-xT_xB₄(T:遷移金属)における磁性と熱膨張

曾根啓太, 久我健太郎, 木村健太, 松本洋介, 中辻知

日本物理学会講演概要集   68 ( 1 )   2013

Fe-Doping and Temperature Dependence of Yb Valence in the Mixed Valence System α-Yb(Al,Fe)B_4

Okawa M., Shin S., Kuga K., Nakatsuji S., Saitoh T., Kasahara A., Taji T., Yamamura S., Wadati H., Yoshida T., Sugimyama T., Ikenaga E., Taguchi M.

Meeting Abstracts of the Physical Society of Japan   68 ( 2 )   541 - 541   2013

価数揺動系YbAl_1-xMn_xB₄の単結晶における低温磁性

鈴木慎太郎, 曾根啓太, 久我健太郎, 志村恭通, 松本洋介, 中辻知

日本物理学会講演概要集   68 ( 2 )   2013

28pXA-10 Pressure-induced Valence Change of Yb ions in Valence Fluctuating β-YbAlB_4

Sakaguchi Y., Kobayashi H., Ikeda S., Kuga K., Sone K., Nakatsuji S., Hirao N., Ohishi Y., Kawamura N., Mizumaki J.

Meeting Abstracts of the Physical Society of Japan   68 ( 1 )   670 - 670   2013

Pressure induced Valence Change of Yb ions at Low Temperature in Valence Fluctuating βYbAlB_4.

Sakaguchi Y., Ikeda S., Kawamura N., Mizumaki M., Kuga K., Nakatsuji S., Kobayashi H.

Meeting Abstracts of the Physical Society of Japan   68 ( 2 )   465 - 465   2013

価数揺動物質YbAlB₄の¹⁷⁴Yb放射光メスバウアー分光法による研究

阪口友唯, 池田修悟, 増田亮, 小林康浩, 瀬戸誠, 依田芳卓, 久我健太郎, 中辻知, 小林寿夫

日本物理学会講演概要集   68 ( 1 )   2013

Magnetic Field Response of Heavy Fermion System β-YbAlB_4 at Low Temperature and under High Pressure.

Tomita T., Shimura Y., Kuga K., Matsumoto Y., Takahashi T., Nakatsuji S.

Meeting Abstracts of the Physical Society of Japan   68 ( 2 )   540 - 540   2013

Partially disordered state of triangular lattice antiferromagnet NaCo(Acac)_3 benzene

Karaki Y., Kuga K., Kimura K., Matsubayashi K., Uwatoko Y.

Meeting Abstracts of the Physical Society of Japan   68 ( 2 )   361 - 361   2013

β-YbAl_1-xFe_xB₄における量子臨界現象と圧力相図

冨田崇弘, 江畑政哉, 高橋博樹, 久我健太郎, 松本洋介, 中辻知, 松林和幸, 上床美也

日本物理学会講演概要集   68 ( 1 )   2013

28pXA-15 Transport study on the metamagnetism in α-YbAlB_4

Hong J., Matsumoto Y., O'Farrell E. C. T., Kuga K., Nakatsuji S.

Meeting Abstracts of the Physical Society of Japan   68 ( 1 )   672 - 672   2013

Anisotropic Magnetic Field Evolution of Nuclear Spin-Lattice Relaxation in α-YbAlB_4 Studied by Low Tempereture Themal Relaxation

Matsumoto Y., Hong J., Kuga K., Nakatsuji S.

Meeting Abstracts of the Physical Society of Japan   68 ( 2 )   540 - 540   2013

28pXA-12 NMR study on heavy fermion single crystal β-YbAlB_4

Takano Shun, Grbic M., Yoshida M., Takigawa M., O'Farrell E. C. T., Kuga K., Nakatsuji S.

Meeting Abstracts of the Physical Society of Japan   68 ( 1 )   671 - 671   2013

NMR studies on heavy fermion compounds β-LnAlB_4(Ln=Yb,Lu)

Takano Shun, Grbic M.S., Yoshida M., Takigawa M., Suzuki S., O'Farrell E.C.T., Kuga K., Nakatsuji S.

Meeting Abstracts of the Physical Society of Japan   68 ( 2 )   539 - 539   2013

Two Types of Magnetic Ordered Phases induced by Fe doping in the Heavy Fermion Valence Fluctuating System α-YbAlB_4

Kuga K., Sone K., Nakatsuji S.

Meeting Abstracts of the Physical Society of Japan   68 ( 2 )   541 - 541   2013

重い電子系α-YbAl_1-xFe_xB₄の強磁場磁化過程

寺島拓, 松田康弘, 近藤晃弘, 金道浩一, 久我健太郎, 松本洋介, 中辻知

日本物理学会講演概要集   68 ( 2 )   2013

29pXY-1 Single crystal growth and physical properties of the orbitally-active honeycomb-based quantum magnet Ba_3CuSb_2O_9

Kimura K., Halim Mario, Kuga K., Nakatsuji S.

Meeting Abstracts of the Physical Society of Japan   68 ( 1 )   725 - 725   2013

Magnetic order induced by Fe substitution of Al site in the heavy-fermion systems α-YbAlB4 and β-YbAlB4

Kentaro Kuga, Gregory Morrison, Larico Treadwell, Julia Y. Chan, Satoru Nakatsuji

Physical Review B - Condensed Matter and Materials Physics   86   2012.12

21aFH-11 Hall effect measurements around the quantum critical point in the valence fluctuating YbAlB_4 system

O'Farrell E.C.T., Kuga K., Matsumoto Y., Matsubayashi K., Uwatoko Y., Nakatsuji S.

Meeting abstracts of the Physical Society of Japan   67 ( 2 )   580 - 580   2012.8

24aYB-3 Hall effect measurements of the valence fluctuating heavy fermion β-YbAlB_4 under pressure

O'Farrell E. C. T., Kuga K., Matsumoto Y., Tomita T., Matsubayashi K., Uwatoko Y., Nakatsuji S.

Meeting abstracts of the Physical Society of Japan   67 ( 1 )   545 - 545   2012.3

19pHC-1 Ultralow temperature properties of the quadrupolar Rondo lattice system PrTr_2Al_<20> (Tr=Ti, V)

Sakai A., Kuga K., O'Farrell E. C. T., Matsumoto Y., Karaki Y., Nakatsuji S.

Meeting Abstracts of the Physical Society of Japan   67 ( 0 )   490 - 490   2012

24aYB-6 Quantum Critical Phenomena Induced by Fe doping in the Valence Fluctuating System α-YbAlB_4

Kuga K., Sone K., Matsumoto Y., O'Farrell E. C. T., Nakatsuji S.

Meeting Abstracts of the Physical Society of Japan   67 ( 0 )   546 - 546   2012

24aYB-5 Single crystal growth and thermal expansion of YbAl_<1-x>Fe_xB_4

Sone K., Kuga K., Matsumoto Y., Nakatsuji S., Nagasawa T.

Meeting Abstracts of the Physical Society of Japan   67 ( 0 )   545 - 545   2012

20aPSB-17 Structural Properties of Valence Fluctuating Yb(Al_<1-x>Fe_x)B_4 Under Hydrostatic Pressure

Sakaguchi Y., Ikeda S., Kuga K., Sone K., Nakatsuji S., Hirao N., Ohishi Y., Kobayashi H.

Meeting Abstracts of the Physical Society of Japan   67 ( 0 )   528 - 528   2012

20aPSB-16 Magnetization and valence state in a heavy fermion compound YbAl_<1-x>Fe_xB_4 at high magnetic fields

Terashima T., Matsuda Y. H., Nakatsuji S., Kuga K., Sone K., Kawamura N., Mizumaki M., Inami T.

Meeting Abstracts of the Physical Society of Japan   67 ( 0 )   527 - 527   2012

20aPSA-72 Cu, Ga-NMR Study of Pr (Cu, Ga)_<13>

Tokunaga Y., Sakai H., Kambe S., Shimura Y., Kuga K., Sakakibara S., Cho J. Y., Chan J. Y.

Meeting Abstracts of the Physical Society of Japan   67 ( 0 )   523 - 523   2012

Pr(Cu,Ga)₁₃のCu,Ga-NMRによる研究

徳永陽, 酒井宏典, 神戸振作, 志村恭通, 久我健太郎, 榊原俊郎, CHO J. Y., CHAN J. Y.

日本物理学会講演概要集   67 ( 2 )   2012

四極子近藤格子系PrTr₂Al₂₀(Tr=Ti,V)における極低温物性

酒井明人, 久我健太郎, FARRELL E. C. T. O’, 松本洋介, 柄木良友, 中辻知

日本物理学会講演概要集   67 ( 2 )   2012

21aFH-10 Thermal expansion and impurity substitution effect in the valence fluctuation system YbAlB_4

Sone K., Kuga K., Matsumoto Y., Nakatsuji S., Terashima T., Matsuda Y., Nagasawa T., Matsuda K.

Meeting Abstracts of the Physical Society of Japan   67 ( 2 )   580 - 580   2012

24pPSB-71 Mossbauer spectroscopy of Fe doping Valence fluctuating α-YbAlB_4

Sakaguchi Y., Ikeda S., Kuga K., Sone K., Nakatsuji S., Kobayashi H.

Meeting Abstracts of the Physical Society of Japan   67 ( 1 )   581 - 581   2012

価数揺動物質Yb(Al_1-xFe_x)B₄の高圧力下構造解析

阪口友唯, 池田修悟, 小林寿夫, 久我健太郎, 曾根啓太, 中辻知, 平尾直久, 大石泰生

高圧討論会講演要旨集   53rd   2012

価数揺動物質Yb(Al_1-xFe_x)B₄の圧力下物性

阪口友唯, 池田修悟, 久我健太郎, 曾根啓太, 中辻知, 平尾直久, 大石泰生, 小林寿夫

日本物理学会講演概要集   67 ( 2 )   2012

価揺動物質α-YbAl_1-xFe_xB₄の磁場中低温物性

久我健太郎, 曾根啓太, 松本洋介, O’FARRELL E. C. T., 中辻知

日本物理学会講演概要集   67 ( 1 )   2012

24aYB-4 Low temperature specific heat study of the metamagnetism in α-YbAlB_4

Hong J., Matsumoto Y., Kuga K., Nakatsuji S.

Meeting Abstracts of the Physical Society of Japan   67 ( 1 )   545 - 545   2012

YbAl_1-xFe_xB₄の単結晶育成と熱膨張

曾根啓太, 久我健太郎, 松本洋介, 中辻知, 長澤亨

日本物理学会講演概要集   67 ( 1 )   2012

重い電子系Yb化合物β-YbAlB₄の圧力誘起量子臨界現象

冨田崇弘, 高橋博樹, 江畑政哉, 久我健太郎, 中辻知, 松林和幸, 上床美也

高圧討論会講演要旨集   53rd   2012

24aYB-1 High-pressure NMR study of α-YbAlB_4

Kimura K., Yamauchi I., Takigawa M., Kuga K., Nakatsuji S.

Meeting Abstracts of the Physical Society of Japan   67 ( 1 )   544 - 544   2012

24aYB-2 NMR study of α-YbA1B4

Tajima K., Takigawa M., Kuga K., Nakatsuji S.

Meeting Abstracts of the Physical Society of Japan   67 ( 1 )   545 - 545   2012

重い電子系α-YbAl_1-xFe_xB₄の強磁場磁化と価数

寺島拓, 松田康弘, 中辻知, 久我健太郎, 曾根啓太, 河村直己, 水牧仁一朗, 稲見俊哉

日本物理学会講演概要集   67 ( 2 )   2012

22aGC-10 Hall effect measurements of the valence fluctuating heavy fermion β-YbAlB_4

O'Farrell E., Matsumoto Y., Kuga K., Nakatsuji S.

Meeting abstracts of the Physical Society of Japan   66 ( 2 )   494 - 494   2011.8

26aEC-2 Quantum oscillations and the Fermi surface of the heavy fermion α-YbAlB_4 across a meta-magnetic transition

O'Farrell E.C.T., Tompsett D.A., Horie N., Kuga K., Yamaura J., Nakatsuji S., Sutherland M.L.

Meeting abstracts of the Physical Society of Japan   66 ( 1 )   582 - 582   2011.3

22aGC-11 NMR study of α-YbAlB_4

Tajima K., Takigawa M., Kuga K., Nakatsuji S.

Meeting Abstracts of the Physical Society of Japan   66 ( 0 )   494 - 494   2011

26aEC-3 NMR of α-YbAlB_4

Tajima K., Takigawa M., Kuga K., Nakatsuji S.

Meeting Abstracts of the Physical Society of Japan   66 ( 0 )   582 - 582   2011

23aPS-48 Pressure-induced phase transition of the heavy fermion system β-YbAl_<1-x>Fe_xB_4

Shirasaki N., Tomita T., Takahashi H., Kuga K, Nakatsuji S., Matsubayashi K., Uwatoko Y.

Meeting Abstracts of the Physical Society of Japan   66 ( 0 )   588 - 588   2011

23aGB-12 Low Temperature Magnetism of Ba_3CuSb_2O_9

Nakatsuji S., Kuga K., Kimura K., Ishii R., Rodriguez J. A., Broholm C.

Meeting Abstracts of the Physical Society of Japan   66.2.3   569   2011

23aGB-11 ESR in Ba_3CuSb_2O_9

Hagiwara M., Ishii R., Kuga K., Kimura K., Nakatsuji S., Nakano T., Nozue Y.

Meeting Abstracts of the Physical Society of Japan   66 ( 0 )   569 - 569   2011

Ba₃CuSb₂O₉のESR

萩原政幸, 石井梨恵子, 久我健太郎, 木村健太, 中辻知, 中野岳仁, 野末泰夫

日本物理学会講演概要集   66 ( 2 )   2011

22aGC-12 Anisotropic heavy Fermi-liquid formation in the valence fluctuating α-YbAlB_4

Matsumoto Y., Kuga K., Tomita T., Karaki Y., O'Farrell Eoin, Nakatsuji S.

Meeting Abstracts of the Physical Society of Japan   66 ( 2 )   495 - 495   2011

22aGC-8 Magneto-resistance of the valence fluctuating system YbAlB_4 and possibility of its anisotropic heavy electron formation

Hong J. P., Matsumoto Y., Kuga K., Nakatsuji S.

Meeting Abstracts of the Physical Society of Japan   66 ( 2 )   494 - 494   2011

α-YbAlB₄のNMR

田島一樹, 瀧川仁, 久我健太郎, 中辻知

日本物理学会講演概要集   66 ( 1 )   2011

α-YbAlB₄のNMR

田島一樹, 瀧川仁, 久我健太郎, 中辻知

日本物理学会講演概要集   66 ( 2 )   2011

Low-temperature thermal transport coefficients of heavy fermion β-YbAlB<inf>4</inf>

Y. MacHida, C. Ogura, K. Izawa, K. Kuga, S. Nakatsuji

Journal of Physics: Conference Series   273 ( 1 )   2011

Ba₃CuSb₂O₉の低温磁性

中辻知, 久我健太郎, 木村健太, 石井梨恵子, RODRIGUEZ J. A., BROHOLM C., BROHOLM C.

日本物理学会講演概要集   66 ( 2 )   2011

重い電子系β-YbAl_1-xFe_xB₄の圧力誘起相転移

白崎暢大, 冨田崇弘, 冨田崇弘, 高橋博樹, 高橋博樹, 久我健太郎, 中辻知, 松林和幸, 上床美也

日本物理学会講演概要集   66 ( 2 )   2011

26aEC-4 Magnetism and Valence Change Induced by Fe doping in the Valence Fluctuating Heavy Fermion System α-YbAlB_4

Kuga K., Shin S., Nishino Y., Tamasaku K., Yabashi M., Ishikawa T., Kiuchi Y., Matsumoto Y., Nakatsuji S., Okawa M., Takata Y., Matsunami M., Eguchi R., Taguchi M., Chainani Ashish

Meeting Abstracts of the Physical Society of Japan   66 ( 1 )   582 - 582   2011

22aGC-9 Thermal expansion of heavy fermion valence fluctuation materials YbAlB_4

Sone K., Kuga K., Matsumoto Y., Kimura K., Matsuda K., Nakatsuji S.

Meeting Abstracts of the Physical Society of Japan   66 ( 2 )   494 - 494   2011

22aGC-13 Quantum Critical Phenomena Induced by Fe doping in the Valence Fluctuating Heavy Fermion System α-YbAlB_4

Kuga K., Chainani Ashish, Shin S., Nishino Y., Tamasaku K., Yabashi M., Ishikawa T., Kiuchi Y., O'Farrell E. C. T., Matsumoto Y., Nakatsuji S., Okawa M., Takata Y., Matsunami M., Eguchi R., Taguchi M.

Meeting Abstracts of the Physical Society of Japan   66 ( 2 )   495 - 495   2011

26aEC-1 T/B scaling and its Free Energy in the Heavy Fermion Systems β-YbAlB_4

Matsumoto Y., Nakatsuji S., Kuga K., Karaki Y., Shimura Y., Sakakibara T., Nevidomskyy A.H., Coleman P.

Meeting Abstracts of the Physical Society of Japan   66 ( 1 )   581 - 581   2011

23aPS-61 Low Temperature Specific Heat Measurements of the FeAs-based Superconductor

Deguchi K., Kihou K., Lee C-H., Iyo A., Eisaki H., Osaki E., Sato N. K., Saito T., Fukazawa H., Kohori Y., Kuga K., Matsumoto Y., Nakatsuji S.

Meeting Abstracts of the Physical Society of Japan   65 ( 2 )   474 - 474   2010

23aWG-2 NMR of α-YbAlB_4

Tajima K., Takigawa m., Kuga K., Nakatsuji S.

Meeting Abstracts of the Physical Society of Japan   65 ( 0 )   448 - 448   2010

α-YbAlB₄のNMR

田島一樹, 瀧川仁, 久我健太郎, 中辻知

日本物理学会講演概要集   65 ( 2 )   2010

23aWG-3 Quantum criticality of heavy fermion β-YbAlB_4 probed by thermal conductivity

Machida Y., Ogura C., Izawa K., Kuga K., Nakatsuji S.

Meeting Abstracts of the Physical Society of Japan   65 ( 2 )   449 - 449   2010

21aGD-3 Quantum Phase Transition Induced by Chemical Substitution in the Valence Fluctuating Systems YbAlB_4

Kuga K., Karaki Y., Matsumoto Y., Tomita T., Horie N., Yamaura J., Kiuchi Y., Nakatsuji S.

Meeting Abstracts of the Physical Society of Japan   65 ( 1 )   591 - 591   2010

21aGD-4 Lu dilution effects in the Heavy Fermion Systems α-, β-YbAlB_4

Matsumoto Y., Kuga K., Nakatsuji S.

Meeting Abstracts of the Physical Society of Japan   65 ( 1 )   591 - 591   2010

21aGD-1 Low temperature thermal transport coefficients of heavy fermion β-YbAlB_4

Machida Y., Ogura C., Izawa K., Kuga K., Nakatsuji S.

Meeting Abstracts of the Physical Society of Japan   65 ( 1 )   591 - 591   2010

21aGD-2 Quantum Criticality in the Heavy Fermion System β-YbAlB_4 at Low Temperature under Pressure

Tomita T., Kuga K., Horie N., Matsumoto Y., Nakatsuji S., Ueda H., Matsubayashi K., Matsumoto T., Uwatoko Y.

Meeting Abstracts of the Physical Society of Japan   65 ( 1 )   591 - 591   2010

23aWG-1 Magnetic and Transport Properties of Lu dilution Systems of the Heavy Fermion Systems α-, β-YbAlB_4

Matsumoto Y., Kuga K., Nakatsuji S.

Meeting Abstracts of the Physical Society of Japan   65 ( 2 )   448 - 448   2010

28aRL-2 Non-Fermi-liquid behavior under magnetic field along ab-plane of the quantum critical material β-YbAlB_4

Kuga K., Matsumoto Y., Tomita T., Tokunaga M., Horie N., Nakatsuji S.

Meeting Abstracts of the Physical Society of Japan   64 ( 2 )   562 - 562   2009

27pRH-7 Specific heat and ^<75>As-NQR of KFe_2As_2

Yamada Y., Shirage P. M., Kihou K., Lee C-H., Kito H., Iyo A., Eisaki H., Kondo K., Saito T., Fukazawa H., Kohori Y., Kuga K., Matsumoto Y., Nakatsuji S., Takeshita N.

Meeting Abstracts of the Physical Society of Japan   64 ( 0 )   545 - 545   2009

27pTL-8 Low temperature magnetism of Pr(CuGa)_<13>

Shimura Y., Kuga K., Sakakibara T., Cho J. Y., Chan Julia Y.

Meeting Abstracts of the Physical Society of Japan   64 ( 0 )   563 - 563   2009

KFe₂As₂の比熱及び⁷⁵As-NQR

山田佑自, 近藤健二, 齊藤拓, 深澤英人, 深澤英人, 小堀洋, 小堀洋, 久我健太郎, 松本洋介, 中辻知, 竹下直, 竹下直, SHIRAGE P. M., 木方邦宏, 木方邦宏, LEE C-H., LEE C-H., 鬼頭聖, 鬼頭聖, 伊豫彰, 伊豫彰, 永崎洋, 永崎洋

日本物理学会講演概要集   64 ( 2 )   2009

28aRL-6 Quantum criticality in β-YbAlB_4 probed by the thermal transport coefficient

Ogura C., Machida Y., Izawa K., Kuga K., Tomita T., Nakatsuji S.

Meeting Abstracts of the Physical Society of Japan   64 ( 2 )   563 - 563   2009

Pr(CuGa)₁₃の低温磁性

志村恭通, 久我健太郎, 榊原俊郎, CHO J. Y., CHAN Julia Y.

日本物理学会講演概要集   64 ( 1 )   2009

28aRL-5 Fe-substitution dependence of Yb valence in heavy fermion Yb(Al, Fe)B_4

Okawa M., Nishino Y., Ishikawa T., Kuga K., Horie N., Nakatsuji S., Shin S., Matsunami M., Ishizaka K., Eguchi R., Taguchi M., Chainani Ashish, Takata Y., Yabashi M., Tamasaku K.

Meeting Abstracts of the Physical Society of Japan   64 ( 2 )   563 - 563   2009

30aTD-3 Low Temperature Physical Properties of Heavy Fermion System α-YbAlB_4

Naoki H., Tomita T., Kuga K., Matsumoto Y., Petrovic Cedomir, Nakatsuji S.

Meeting Abstracts of the Physical Society of Japan   64 ( 1 )   651 - 651   2009

28aRL-4 Magnetic-field-Induced Crossover in the Heavy Fermion SYstem α-YbAlB_4

H. Naoki, Tomita T., Kuga K., Matsumoto Y., Nakatsuji S.

Meeting Abstracts of the Physical Society of Japan   64 ( 2 )   563 - 563   2009

30aTD-4 Impurity Effect in the Heavy Fermion Systems YbAlB_4

Kuga K., Horie N., Matsumoto Y., Tomita T., Nakatsuji S.

Meeting Abstracts of the Physical Society of Japan   64 ( 1 )   651 - 651   2009

28aRL-1 Zero-Field Quantum Criticality and Non-Fermi Liquid-Fermi Liquid Crossover in the Heavy Fermi System β-YbAlB_4

Matsumoto Y., Kuga K., Karaki Y., Tomita T., Machida Y., Sakaibara T., Shimura Y., Nakatsuji S.

Meeting Abstracts of the Physical Society of Japan   64 ( 2 )   562 - 562   2009

30aTD-1 Quantum Criticality and Scaling in Thermodynamic Properties in the Heavy Fermion System β-YbAlB_4

Matsumoto Y., Kuga K., Karaki Y., Tomita T., Machida Y., Sakakibara T., Nakatsuji S.

Meeting Abstracts of the Physical Society of Japan   64 ( 1 )   651 - 651   2009

30aTD-2 Quantum Phase Transition and Superconductivity of the Heavy Fermion System β-YbAlB_4 under Pressure

Tomita T., Kuga K., Horie N., Matsumoto Y., Nakatsuji S., Ueda H., Matsubayashi K., Matsumoto T., Uwatoko Y.

Meeting Abstracts of the Physical Society of Japan   64 ( 1 )   651 - 651   2009

28aRL-3 Superconductivity and Magnetism of the Heavy Fermion System β-YbAlB_4 under Pressure

Tomita T., Kuga K., Horie N., Matsumoto Y., Nakatsuji S., Ueda H., Matsubayashi K., Matsumoto T., Uwatoko Y.

Meeting Abstracts of the Physical Society of Japan   64 ( 2 )   563 - 563   2009

30aTD-5 Photoemission spectroscopy of heavy-fermion system YbAlB_4 : Electronic structure and valence estimation

Okawa M., Nishino Y., Ishikawa T., Kuga K., Horie N., Nakatsuji S., Shin S., Matsunami M., Ishizaka K., Eguchi R., Taguchi M., Chainani Ashish, Takata Y., Yabashi M., Tamasaku K.

Meeting Abstracts of the Physical Society of Japan   64 ( 1 )   652 - 652   2009

20aQF-4 Non-Fermi-Liquid Behavior in the Heavy Fermion System YbAlB_4 under Pressure

Tomita T., Kuga K., Matsumoto Y., Nakatsuji S., Ueda H., Ueda Y., Matsubayashi K., Uwatoko Y.

Meeting Abstracts of the Physical Society of Japan   63 ( 2 )   442 - 442   2008

26aWP-1 Low temperature transport and magnetic properties of the heavy fermion compound β-YbAlB_4

Nakatsuji S., Kuga K., Machida Y., Matsumoto Y., Karaki Y., Tayama T., Sakakibara T., Ishimoto H.

Meeting Abstracts of the Physical Society of Japan   63 ( 1 )   632 - 632   2008

26aWP-2 Non-Fermi-Liquid Behavior and Sample Dependence in Pure Single Crystal of Heavy Fermion System YbAlB_4

Kuga K., Nakatsuji S., Yonezawa S., Karaki Y., Kiuchi Y., Ichihara M., Ishimoto H., Maeno Y.

Meeting Abstracts of the Physical Society of Japan   63 ( 1 )   632 - 632   2008

20aQF-3 Thermodynamic Properties of Quantum Criticality in the Heavy Fermion System β-YbAlB_4

Matsumoto Y., kuga K., Karaki Y., Tomita T., Machida Y., Nakatsuji S.

Meeting Abstracts of the Physical Society of Japan   63 ( 2 )   442 - 442   2008

26aWP-3 Pressure Induced Phase Transition of Heavy Fermion System YbAlB_4

Tomita T., Kuga K., Matsumoto Y., Nakatsuji S., Matsubayashi K., Uwatoko Y.

Meeting Abstracts of the Physical Society of Japan   63 ( 1 )   632 - 632   2008