研究者詳細 - 任　皓駿

論文 - 任　皓駿

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Pressure-dependent electronic structure of the A-site ordered perovskite CaCu3Ti4O12 via x-ray Raman scattering

Yasuhisa Tezuka, Hojun Im, Takao Watanabe, Hirofumi Ishii, Nozomu Hiraoka, Yoichi Ishiwata, and Hitoshi Yamaoka

Physical Review B 109 ( 3 ) 035132 2024年01月

Capacitance characterization of graphene/n-Si Schottky junction solar cell with MOS capacitor

Masahiro Teraoka, Yuzuki Ono and Hojun Im

Materials Research Express 10 ( 8 ) 085602 2023年08月

Variation of Strong Correlation Effects in A-site Ordered Perovskites CaCu3Ti4−xRuxO12: Photoemission and Inverse Photoemission Studies

Hojun Im, Masataka Iwataki, Masanori Tsunekawa, Takao Watanabe, Hitoshi Sato, Masashi Nakatake, and Shin-ichi Kimura

Journal of the Physical Society of Japan ( 92 ) 044701 2023年04月

Thermal annealing effects on graphene/n-Si Schottky junction solar cell: removal of PMMA residues

Yuzuki Ono and Hojun Im

Japanese Journal of Applied Physics 62 ( 4 ) 045002 2023年04月

Polarization Dependent Ti 2p Resonant X-Ray Raman Scattering Study of CaCu3Ti4O12

R. Kato, H. Im, T. Watanabe, N. Nakajima, Y. Tezuka

Photon Factory Activity Report 2020 38 178 - 178 2021年07月

Temperature Dependent Local Structure of A-Site Ordered Perovskite CaCu3Ti4O12 Measured by X-Ray Fluorescence Holography

M. Asari, H.J. Im, T. Watanabe, N. Happo, K. Kimura, K. Hayasi, S. Hosokawa, Y. Tezuka

Photon Factory Activity Report 2020 38 177 - 177 2021年07月

Temperature dependence of the electronic structure of A-site ordered perovskite CaCu3Ti4O12: Angle-integrated and -resolved photoemission studies

H. J. Im, T. Sakurada, M. Tsunekawa, T. Watanabe, H. Miyazaki, S. Kimura

Solid State Communications 298 113648 2019年08月

Local Structure Study of A-site Ordered Perovskite CaCu3Ti4O12 by means of X-ray Fluorescence Holography

H. Kamide, H.J. Im, T. Watanabe, N. Happo, K. Kimura, K. Hayashi, S. Hosokawa, Y. Tezuka

Photon Factory Activity Report 2018 36 2019年07月

Growth and Raman spectroscopy of thickness-controlled rotationally faulted multilayer graphene

H. Kato, N. Itagaki, H. J. Im

Carbon 141 76 - 82 2019年01月

Temperature Dependent O K Resonant X-ray Emission Spectra of CaCu3Ti4O12

Y. Tezuka, H. Kamide, H.J. Im, T. Watanabe, N. Nakajima

Photon Factory Activity Report 2017 35 283 2018年07月

Electronic structure study of CaCu3Ti4O12 by means of X-ray Raman scattering

Y. Tezukaa, Y. Yokouchi, S. Sasaki, S. Nakamoto, K. Nishiyama, M. Mikami, H.J. Im,T. Watanabe, S. Nozawa, N. Nakajima, T. Iwazumi

Journal of Electron Spectroscopy and Related Phenomena 220 114 - 117 2017年10月

Temperature Dependent Electronic Structure Study of CaCu3Ti4O12 by Means of X-Ray Raman Scattering

K. Nishiyama, S. Nakamoto, H. Im, T. Watanabe, S. Nozawa, N. Nakajima, T. Iwazumi, Y. Tezuka

Photon Factory Activity Report 2016 #34-B 286 2017年07月

Electronic Structure Study of CaCu3Ti4O12 by means of Soft X-ray Raman Scattering

S. Nakamoto, K Nishiyama, H. Im, T. Watanabe, N. Nakajima, and Y. Tezuka

Photon Factory Activity Report 2015 #33-B 378 2016年07月

Electronic Structure Study of CaCu3Ti4O12 by means of X-ray Raman Scattering

Y. Yokouchi, M. Mikami, H. Im, T. Watanabe, S. Nozawa, N. Nakajima, T. Iwazumi, Y. Tezuka

Photon Factory Activity Report 2014 #32-B 195 2015年12月

Electronic structure of Mott-insulator CaCu3Ti4O12: Photoemission and inverse photoemission study

H. J. Im, M. Iwataki, S. Yamazaki, T. Usui, S. Adachi, M. Tsunekawa, T. Watanabe, K. Takegahara, S. Kimura, M. Matsunami, H. Sato, H. Namatame, M. Taniguchi

Solid State Communications 217 17 - 20 2015年09月

Fermi Surface Variation of Ce 4f-electrons in Hybridization Controlled Heavy-Fermion Systems

H. J. Im, T. Ito, H. Miyazaki, S. Kimura, Y. S. Kwon, Y. Saitoh, S.-I. Fujimori, A. Yasui, H. Yamagami

Solid State Communications 209-210 45 - 48 2015年05月

Electronic Structure Study of CaCu3Ti4O12 by means of X-ray Raman Scattering

Y. Tezuka, M. Mikami, Y. Yokouchi, H. Im, T. Watanabe, S. Nozawa, N. Nakajima, T. Iwazumi

Photon Factory Activity Report 2013 #31-B 323 2014年12月

Photoemission study of CaCu3Ru4O12

H. J. Im, M. Iwataki, M. Tsunekawa, T. Watanabe, M. Matsunami, S. Kimura

UVSOR Activity Report 41 136 - 136 2014年07月

Strong correlation effects in the A-site ordered perovskite CaCu3Ti4O12 revealed by angle-resolved photoemission spectroscopy

H. J. Im, M. Tsunekawa, T. Sakurada, M. Iwataki, K. Kawata, T. Watanabe, K. Takegahara, H. Miyazaki, M. Matsunami, T. Hajiri, S. Kimura

Physical Review B 88 205133-1 - 205133-5 2013年11月

Angle-resolved photoemission study of CaCu3Ti4O12

H. J. Im, M. Tsunekawa, T. Sakurada, M. Iwataki, K. Kawata, T. Watanabe, K. Takegahara, H. Miyazaki, M. Matsunami, T. Hajiri, and S. Kimura

UVSOR Activity Report 40 100 2013年08月

Temperature Dependent Photoemission Spectra of CaCu3Ti4O12

H. J. Im, T. Sakurada, M. Tsunekawa, K. Kawata, T. Watanabe, H. Miyazaki, S. Kimura

UVSOR activity report 2011 90 - 90 2012年06月

A Photon Energy-Dependent Angle-Resolved Photoemission Study of CaCu3Ti4O12

H. J. Im, T. Sakurada, M. Tsunekawa, M. Toita, T. Watanabe, K, Takegahara, H. Miyazaki, S. Kimura

UVSOR activity report 2010 87 - 87 2011年06月

La-doped EuO: A Rare Earth Ferromagnetic Semiconductor with the Highest Curie Temperature

H. Miyazaki, H. J. Im, K. Terashima, S. Yagi, M. Kato, K. Soda, T. Ito, S. Kimura

Applied Physics Letters 96 232503-1 - 232503-3 2010年06月

Ce 4d-4f resonant angle resolved photoemission studies on quantum criticality in heavy-fermion Ce112 systems

H. J. Im, H. Miyazaki, T. Ito, S. Kimura, K. E. Lee, Y. S. Kwon

UVSOR activity report 2009 96 - 96 2010年06月

Change of lattice constant due to the hybridization effect of a ferromagnetic semiconductor EuO

H. Miyazaki, T. Ito, H. J. Im, K. Terashima, T. Iizuka, S. Yagi, M. Kato, K. Soda, S. Kimura

Journal of Physics: Conference Series 200 012124-1 - 012124-4 2010年02月

First-Principles Local-Density Approximation Study of Electronic Structure in CeCoSi2

A. Yasui, H. Yamagami, H. J. Im

The Journal of the Physical Society of Japan 78 104705-1 - 104705-4 2009年09月

Direct Observation of Momentum-Dependent Exchange Interaction in a Heisenberg Ferromagnet

H. Miyazaki, T. Ito, H.J. Im, S. Yagi, M. Kato, K. Soda, S. Kimura

Physical Review Letters 102 227203-1 - 227203-4 2009年06月

In Situ Magnetic Circular Dichroism Experiment on Ferromagnetic Semiconductor EuO Thin Films

H. Miyazaki, T. Ito, K. Terashima, H. J. Im, Y, Takagi, T. Nakagawa, Y. Yamamoto, S. Kimura, S. Yagi, M. Kato, K. Soda, T. Yokoyama

UVSOR Activity Report 2008 86 - 86 2009年06月

Ce 4d-4f Resonant Photoemission Studies in Ce Dilute Kondo System

H. J. Im, M. Tsunekawa, H. Miyazaki, T. Ito, S. Kimura, K. E. Lee, J. B. Hong, Y. S. Kwon

UVSOR Activity Report 2008 87 - 87 2009年06月

Temperature Depedent Angle-Resolved Photoemission Spectra of La-Doped EuO

H. Miyazaki, T. Ito, K. Terashima, H. J. Im, S. Yagi, M. Kato, K. Soda, S. Kimura

UVSOR Activity Report 2008 91 - 91 2009年06月

Pressure-Dependent Far-Infrared Reflectivity Spectra of CeIn3 at 9K

T. Iizuka, T. Mizuno, C. I. Lee, K. E. Lee, H. J. Im, Y. S. Kwon, S. Kimura

UVSOR Activity Report 2008 94 - 94 2009年06月

Crystalline electric field effects in Ce 3d core-level spectra of heavy-fermion systems: Hard x-ray photoemission spectroscopy on CeNi1-xCoxGe2

H.J. Im, T. Ito, S. Kimura, H.-D. Kim, J.B. Hong, Y.S. Kwon

Physical Review B 79 193105-1 - 193105-4 2009年05月

Single Crystal Growth and Magnetic, Optical, and Photoelectrical Properties of EuO Thin Film

H. Miyazaki, T. Ito, H.J. Im, K. Terashima, S. Yagi, M. Kato, K. Soda, S. Kimura

The Japanese Journal of Applied Physics 48 055504-1 - 055504-4 2009年05月

Optical properties of the charge-density-wave compound CeTe2

K.E. Lee, C.I. Lee, H.J. Oh, M.A. Jung, B.H. Min, H.J. Im, T. Izuka, Y.S. Lee, S. Kimura, Y.S. Kwon

Physical Review B 78 134408-1 - 134408-5 2008年10月

Optical evidence for a change in the heavy electron Fermi surface at a magnetic quantum critical point of CeNi1-xCoxGe2

K.E. Lee, C.I. Lee, H.J. Oh, H.J. Im, Tuson Park, S. Kimura, Y.S. Kwon

Journal of Physics: Condensed Matter 20 285202-1 - 285202-5 2008年06月

Momentum-Dependent Kondo Resonance Peaks in a Low-Energy Angle-Resolved Photoemission Spectroscopy

H.J. Im, T. Ito, H. Miyazaki, S. Kimura, C.I. Lee, K.E. Lee, Y.S. Kwon

UVSOR Activity Report 2007 124 - 124 2008年06月

Ce and Gd 4d-4f Resonant Photoemission Studies of Ce1-xGdxCoSi3

H.J. Im, H. Miyazaki, T. Ito, S. Kimura, J.B. Hong, Y.S. Kwon

UVSOR Activity Report 2007 119 - 119 2008年06月

Evidence of Three-Dimensional CDW Formation on CeTe2

T. Ito, H.J. Im, S. Kimura, Y.S. Kwon

UVSOR Activity Report 2007 125 - 125 2008年06月

Temperature Dependent Angle-Resolved Photoemission Spectra on Ferromagnetic EuO Thin Films

H. Miyazaki, T. Ito, S. Ota, H.J. Im, S. Yagi, M. Kato, K. Soda, S. Kimura

UVSOR Activity Report 2007 121 - 121 2008年06月

Infrared Spectroscopy of CeIn3 under a pressure

T. Iizuka, T. Mizuno, K. E. Lee, H. J. Im, Y. S. Kwon, S. Kimura

UVSOR Activity Report 2007 91 2008年06月

Hybridization gap-open in CeIn3

C.I. Lee, K.E. Lee, Y.Y. Song, H.J. Im, S. Kimura, Y.S. Kwon

Infrared Physics & Technology 51 488 - 490 2008年05月

Dramatic Change of Optical Properties at a Quantum Critical Point in the Heavy Fermion System CeNi1-xCoxGe2

Y.Y. Song, K.E. Lee, J.B. Hong, H.J. Im, S. Kimura, Y. S. Kwon

Infrared Physics & Technology 51 485 - 487 2008年05月

Direct observation of dispersive Kondo resonance peaks in a heavy-fermion system

H.J. Im, T. Ito, H.-D. Kim, S. Kimura, K.E. Lee, J.B. Hong, Y.S. Kwon, A. Yasui, H. Yamagami

Physical Review Letters 100 176402-1 - 176402-4 2008年05月

Geometrically frustrated magnetic system Ce5-xLaxNi2Si3

K.E. Lee, H.J. Im, M.H. Jung, Y.S. Kwon

Physica B 403 1450 - 1452 2008年04月

Magnetic ordering in frustrated Pr5Ni2Si3

K.E. Lee, H.J. Im, M.H. Jung, Y.S. Kwon

Physica B 403 1423 - 1425 2008年04月

Angle-resolved photoemission study on EuO thin films

H. Miyazaki, T. Ito, S, Ota, H.J. Im, S. Yagi, M. Kato, K. S. Kimura

Physica B 403 917 - 918 2008年04月

Anomaly in Ce1-xGdxCoSi3

J.B. Hong, N.A. Lee, H.J. Im, M.H. Jung, Y.S. Kwon

Physica B 403 911 - 913 2008年04月

Infrared study on the electronic structure of the alkaline-earth-filled skutterudites AM4Sb12 (A=Sr, Ba; M=Fe, Ru, Os)

S. Kimura, H.J. Im, T. Mizuno, S. Narazu, E. Matsuoka, T. Takabatake

Physical Review B 75 245106-1 - 245106-6 2007年06月

Performance of the Three-dimensional VUV Angle-resolved Photoemission Apparatus at BL7U

T. Ito, S. Kimura, M. Sakai, N. Kondo, T. Horigome, H. Im, H. Miyazaki, K. Soda

UVSOR Activity Report 2006 52 - 52 2007年06月

Angle-resolved Photoemission Study of CeCoGe1.2Si0.8 in the Three-dimensional Momentum space

H.J. Im, T. Ito, S. Kimura, J.B. Hong, Y.S. Kwon

UVSOR Activity Report 2006 94 - 94 2007年06月

Three-Dimensional Angle-Resolved Photoemission Study on EuO thin films

H. Miyazaki, T. Ito, S. Ota, H. J. Im, S. Yagi, M. Kato, K. Soda, S. Kimura

UVSOR Activity Report 2006 111 - 111 2007年06月

Construction of a VUV Angle-resolved Photoemission Beamline BL7U

S. Kimura, T. Ito, M. Sakai, E. Nakamura, N. Kondo, T. Horigome, M. Hosaka, A. Mochihashi, M. Katoh, T. Ejima, H.J. Im, H. Miyazaki, K. Soda

UVSOR Activity Report 2006 50 - 50 2007年06月

Hybridization gap collapse at a quantum critical point of CeNi1-xCoxGe2

Y.S. Kwon, K.E. Lee, M.A. Jung, E.Y. Song, H.J. Oh, H.J. Im, S. Kimura

Journal of Magnetism Magnetic Materials 310 310 - 312 2007年03月

Three-dimensional Fermi surface of CeTe2 studied by angle-resolved photoemission

T. Ito, H.J. Im, S Kimura, Y.S. Kwon

Journal of Magnetism Magnetic Materials 310 431 - 433 2007年03月

Electronic structure of CeNiGe2-xSix studied by resonant photoemission

H.J. Im, T. Ito, H.D. Kim, S Kimura, J.B. Hong, Y.S. Kwon

Journal of Magnetism Magnetic Materials 310 411 - 413 2007年03月

Magnetic-field-induced superconductor-insulator-metal transition in an organic conductor: An infrared magneto-optical imaging spectroscopic study

T. Nishi, S. Kimura, T. Takahashi, H.J. Im, Y.S. Kwon, T. Ito, K. Miyagawa, H. Taniguchi, A. Kawamoto, K. Kanoda

Physical Review B 75 014525-1 - 014525-5 2007年01月

BL5U at UVSOR-II for three-dimensional angle-resolved photoemission spectroscopy

T. Ito, S. Kimura, H.J. Im, E. Nakamura, M. Sakai, T. Horigome, K. Soda, T. Takeuchi

AIP Conference Proceedings 879 587 - 590 2007年01月

Infrared study on electronic structure of SrT4Sb12 (T = Fe, Ru)

S. Kimura, H.J. Im, Y. Sakurai, T. Mizuno, K. Takegahara, H. Harima, K. Hayashi, E. Matsuoka, T. Takabatake

Physica B 383 137 - 139 2006年08月

Iron-Based Heavy Quasiparticles in SrFe4Sb12: An Infrared Spectroscopic Study

S. Kimura, T. Mizuno, H.J. Im, K. Hayashi, E. Matsuoka, T. Takabatake

Physical Review B 73 214416-1 - 214416-5 2006年06月

Three-dimensional angle-resolved photoemission study on CeTe2

T. Ito, H.J. Im, S. Kimura, Y.S. Kwon

UVSOR activity report 2005 100 2006年06月

Electronic structure of CeNiGe2-xSix: Ce 4d-4f resonant photoemission spectroscopy

H.J. Im, T. Ito, S Kimura, H.-D. Kim, J.B. Hong, Y.S. Kwon

UVSOR activity report 2005 98 - 98 2006年06月

Optical pseudogap from iron states in AFe4Sb12 (A = Yb, Ca, Ba)

J. Sichelschmidt, H.J. Im, S. Kimura, V. Voevodin, H. Rosner, W. Schnelle, A. Leithe-Jasper, J.A. Mydosh, Yu. Grin, F. Steglich

UVSOR activity report 2005 63 - 63 2006年06月

Three-dimensional angle-resolved photoemission study on SmS

T. Ito, H.J. Im, A. Chainani, K. Matsubayashi, S. Kimura, H.-D. Kim, K. Imura, H. Suzuki, N.K. Sato

UVSOR activity report 2005 99 - 99 2006年06月

Angle-resolved photoemission study on CeTe2

T. Ito, H.J. Im, S. Kimura, Y.S. Kwon

Physica B 378-380 767 - 768 2006年05月

High-resolution photoemission spectroscopy of CeNiGe2 and CeCoGe2

H.J. Im, T. Ito, S. Kimura, J.B. Hong, Y.S. Kwon

Physica B 378-380 825 - 826 2006年05月

Infrared absorption in heavy 　Fermion system CeNi1-xCoxGe2

Y.S. Kwon, J.B. Hong, H.J. Im, T. Nishi, S. Kimura

Physica B 378-380 823 - 824 2006年05月

Optical Pseudogap from Iron States in Filled Skutterudites AFe4Sb12 (A = Yb and Ca, Ba)

J. Sichelschmidt, V. Voevodin, H.J. Im, S. Kimura, H. Rosner, A. Leithe-Jasper, W. Schnelle, U. Burkhardt, J.A. Mydosh, Yu. Grin, F. Steglich

Physical Review Letters 96 037406-1 - 037406-4 2006年01月

Continuity of Ce 4f electronic structure across the quantum critical point: A resonant photoemission study on CeNi1-xCoxGe2

H.J. Im, T. Ito, J.B. Hong, S. Kimura, Y.S. Kwon

Physical Review B 72 220405(R)-1 - 220405(R)-4 2005年12月

Infrared spectroscopy under multiextreme conditions: Direct observation of pseudo gap formation and collapse in CeSb

T. Nishi, S. Kimura, T. Takahashi, Y. Mori, Y.S. Kwon, H.J. Im, H. Kitazawa

Physical Review B 71 220401(R)-1 - 220401(R)-4 2005年06月

Three-Dimensional Band Dispersion of CeTe2

T. Ito, H.J. Im, S. Kimura, Y.S. Kwon

UVSOR activity report 2004 99 - 99 2005年06月

Ce 4d-4f resonant photoemission spectroscopy on CeNi1-xCoxGe2

H.J. Im, T. Ito, B.K. Lee, S. Kimura, Y.S. Kwon

UVSOR activity report 2004 100 - 100 2005年06月

Improvement of the SGM-TRAIN Monochromator at UVSOR-II BL5U for Low Excitation Energy Photoemission

T. Ito, H.J. Im, S. Kimura, E. Nakamura, T. Horigome

UVSOR activity report 2004 41 - 41 2005年06月

The origin of the phase separation in partially deuterated κ-(ET)2Cu[N(CN)2]Br Studied by infrared magneto-microspectroscopy

T. Nishi, S. Kimura, T. Takahashi, T. Ito, H.J. Im, Y.S. Kwon, K. Miyagawa, H. Taniguchi, A. Kawamoto, K. Kanoda

Solid State Communications 134 189 - 193 2005年04月

Infrared study on CeSb under high pressures

S. Kimura, T. Nishi, Y. Mori, Y. Sumida, T. Takahashi, Y.S. Kwon, H.J. Im, H. Kitazawa

Physica B 359-361 190 - 192 2005年04月

Electrical and magnetic properties of the new Kondo-lattice compound Ce3Pd4Ge4

H.J. Im, Y.S. Kwon, M.H. Jung

Solid State Communications 124 181 - 183 2002年10月

Magnetic and transport properties of the antiferromagnetic dense Kondo lattice system Ce2CuxNi1-xGe6

H.J. Im, B.H. Min, Y.S. Kwon, D.L. Kim, H.-C. Ri

Physica B 312-313 197 - 199 2002年03月

Transport properties in low carrier system CeTe2

B.H. Min, E.D. Moon, H.J. Im, S.O. Hong, Y.S. Kwon, D.L. Kim, H.-C. Ri

Physica B 312-313 205 - 207 2002年03月

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