PAPERS :
- Pressure-dependent electronic structure of A-site ordered perovskite CaCu3Ti4O12
via X-ray Raman scattering
Y. Tezuka, H. J. Im, T. Watanabe, H. Ishii, N. Hiraoka, Y. Ishiwata, and
H. Yamaoka
Phys. Rev. B 109, 035132 (2024).
- Capacitance characterization of Graphene/n-Si Schottky junction solar cell with MOS capacitor
M. Teraoka, Y. Ono, H. J. Im
Mater. Res. Express 10, 085602 (2023).
- Thermal annealing effects on graphene/n-Si Schottky junction solar cell: removal of PMMA residues
Y. Ono and H. J. Im
Jpn. J. Appl. Phys. 62, 045002 (2023).
- Variation of Strong Correlation Effects in A-site Ordered Perovskites CaCu3Ti4−xRuxO12: Photoemission and Inverse Photoemission Studies
H. J. Im, Masataka Iwataki, Masanori Tsunekawa, Takao Watanabe, Hitoshi
Sato, Masashi Nakatake, and Shin-ichi Kimura
J. Phys. Soc. Jpn. 92, 044701 (2023).
- 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 Commun. 298, 113648 (2019).
- Growth and Raman spectroscopy of thickness-controlled rotationally faulted multilayer graphene
H. Kato, N. Itagaki, H. J. Im
Carbon 141, 76 (2019).
- Electronic structure study of CaCu3Ti4O12 by means of X-ray Raman scattering
Y. Tezuka, Y. Yokouchi, S. Sasaki, S. Nakamoto, K. Nishiyama, M. Mikami,
H. J. Im, T. Watanabe, S. Nozawa, N. Nakajima, T. Iwazumi
J. Electron. Spectrosc. Relat. Phenom. 220, 114 (2017).
- 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 Commun. 217, 17 (2015). Fast-track Communication
- 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 Commun. 209-210, 45 (2015).
- 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
Phys. Rev. B 88, 205133 (2013).
- 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
J. Phys.: Conf. Series. 200, 012124 (2010).
- 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
Appl. Phys. Lett. 96, 232503 (2010).
- 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
Phys. Rev. B 79, 193105 (2009).
- 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
Phys. Rev. Lett. 102, 227203 (2009).
- Single Crystalline Growth
and Magnetic, Optical and Photoelectrical Properties of EuO Thin Films
H. Miyazaki, T. Ito, H. J. Im, K. Terashima, S. Yagi, M. Kato, K. Soda,
S. Kimura
Jpn. J. Appl. Phys. 48,055504 (2009).
- First-Principles Local-Density Approximation Study of Electronic Structure
in CeCoSi2
A. Yasui, H. Yamagami, H. J. Im
J. Phys. Soc. Jpn. 78, 104705 (2009).
- 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. Iizuka,
Y. S. Lee, S. Kimura, Y. S. Kwon
Phys. Rev. B 78, 134408 (2008).
- 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
J. Phys.: Condens. Matter 20, 285202 (2008).
- 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
Phys. Rev. Lett. 100, 176402 (2008).
- 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 Phys. Tech. 51, 485 (2008).
- Hybridization gap-open in CeIn3
C. I. Lee, K. E. Lee, Y. Y. Song, H. J. Im, S. Kimura, Y. S. Kwon
Infrared Phys. Tech. 51, 488 (2008).
- 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
Physica B 403, 917 (2008).
- Magnetic ordering in frustrated Pr5Ni2Si3
K. E. Lee, H. J. Im, M. H. Jung, Y. S. Kwon
Physica B 403, 1423 (2008).
- Geometrically frustrated magnetic system Ce5-xLaxNi2Si3
K. E. Lee, H. J. Im, M. H. Jung, Y. S. Kwon
Physica B 403, 1450 (2008).
- Anomaly in Ce1-xGdxCoSi3
J. B. Hong, N. A. Lee, H. J. Im, M. H. Jung, Y. S. Kwon
Physica B 403, 911 (2008).
- 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
Phys. Rev. B 75, 245106 (2007) .
- 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
J. Magn. Magn. Mater. 310, 411-413 (2007).
- Three-dimentional Fermi surface of CeTe2 studied by angle-resolved photoemission
T. Ito, H. J. Im, S. Kimura, Y. S. Kwon
J. Magn. Magn. Mater. 310, 431-433 (2007).
- 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
J. Magn. Magn. Mater. 310, 310-312 (2007).
- 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
Phys. Rev. B 75, 014525 (2007).
- 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).
- Iron-Based Heavy Quasiparticles in SrFe4Sb12: An Infrared Spectroscopic
Study
S. Kimura, T. Mizuno, H. J. Im, K. Hayashi, E. Matsuoka, T. Takabatake
Phys. Rev. B 73, 214416 (2006).
- 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 (2006).
- 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 (2006).
- Angle-resolved photoemission study on CeTe2
T. Ito, H. J. Im, S. Kimura, Y.S. Kwon
Physica B 378-380, 767 (2006).
- 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 (2006).
- 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
Phys. Rev. Lett. 96, 037406 (2006).
- 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
Phys. Rev. B 72, 220405(R) (2005).
- Infrared spectroscopy under
multi-extreme 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
Phys. Rev. B 71, 220401(R) (2005).
- The origin of the phase separation in partially deuterated k-(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 Commun. 134, 189-193 (2005).
- 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).
- Electrical and magnetic properties of the new Kondo-lattice compound Ce3Pd4Ge4
H. J. Im, Y. S. Kwon and M. H. Jung
Solid State Commun. 124, 181 (2002).
- 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 and
H.-C. Ri
Physica B 312-313, 205 (2002).
- 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 and H.-C. Ri
Physica B 312-313, 197 (2002).
REPORTS :
- 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).
- 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).
- Electronic Structure Study of CaCu3Ti4O12 by means of Soft X-ray Raman Scattering
S. Nakamoto, K Nishiyama, H. Im, T. Watanabe, N. Nakajima, Y. Tezuka
Photon Factory Activity Report 2015 #33-B, 378 (2016).
- 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).
- 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).
- Photoemission study of CaCu3Ru4O12
H. J. Im, M. Iwataki, M. Tsunekawa, T. Watanabe, M. Matsunami, S. Kimura
UVSOR Activity Report, 136 (2014).
- 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, S. Kimura
UVSOR Activity Report, 100 (2013).
- 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 (2012).
- 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 (2011).
- 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 (2010).
- 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 (2009).
- 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 (2009).
- 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 (2009).
- 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 (2009).
- 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 (2008).
- Evidence of Three-Dimensional CDW Formation on CeTe2
T. Ito, H. J. Im, S. Kimura, Y. S. Kwon
UVSOR Activity Report 2007, 125 (2008).
- 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 (2008).
- 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 (2008).
- 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).
- 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 (2007).
- 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 (2007).
- 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 (2007).
- 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 (2007).
- 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 (2006).
- 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 (2006).
- 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 (2006).
- Three-dimensional angle-resolved photoemission study on CeTe2
T. Ito, H. J. Im, S. Kimura, Y. S. Kwon
UVSOR activity report 2005, 100 (2006).
- 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 (2005).
- Three-Dimensional Band Dispersion of CeTe2
T. Ito, H. J. Im, S. Kimura, Y. S. Kwon
UVSOR activity report 2004, 99 (2005).
- 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 (2005).
PRESENTATIONS (International conference) :
- H. J. Im, M. Tsunekawa, T. Sakurada, K. Kawata, T. Watanabe, K. Takegahara,
H. Miyazaki and S. Kimura
Electronic structure of A-site ordered perovskite CaCu3Ti4O12 studied by
angle-resolved photoemission spectroscopy
The 19th International Conference on Magnetism with Stronlgy Correlated
Electron Systems (SCES), July 8-13, 2012, Busan, Korea.
- H. J. Im, Ce 4f electronic structure of heavy-fermion systems across quantum
critical point: a resonant angle-resolved photoemission study
The 2nd GCOE International Symposium, 2010, Sendai.
- H. J. Im, Systematic angle-resolved photoemission study of heavy-fermion
materials
11-th International Conference on Electronic Spectroscopy and Structure,
2009, Nara.
- H. J. Im, Systematic angle-resolved photoemission study of Ce-based heavy-fermion
systems
2nd International UVSOR Workshop on Low-Energy Photoemission of Solids
using Synchrotron Radiation, 2009, Okazaki.
- H.J. Im, T. Ito, H.-D. Kim, S. Kimura, K.E. Lee, J.B. Hong, Y.S. Kwon,
A. Yasui, H. Yamagami
Dispersion of Kondo resonance peaks in CeCoGe1.2Si0.8: Ce 4d-4f resonant
angle-resolved photoemission
The International Conference on Strongly Correlated Electron Systems 2008,
August 17-22, 2008, Buzios/Rio, Brazil.
- H. J. Im, T. Ito, H.-D. Kim, S. Kimura, K. E. Lee, J. B. Hong, Y. S. Kwon,
A. Yasui, H. Yamagami
Direct observation of dispersive Kondo resonance peaks in a heavy-fermion system
The International Conference on Low-Energy Electrodynamics in Solids 2008, June
30 - July 4, 2008, Vancouver – Whistler, Canada.
- H. J. Im, T. Ito, S Kimura, H.-D. Kim, J. B. Hong, Y. S. Kwon
Electronic structure of CeNiGe2-xSix studied by Ce 4d-4f resonant photoemission
The 17th International Conference on Magnetism, August 20-25, 2006, Kyoto,
Japan.
- H. J. Im, T. Ito, S. Kimura, J. B. Hong, Y. S. Kwon
High-resolution photoemission study of the Ce 4f electron characters in
CeNi1-xCoxGe2
The International Conference on Strongly Correlated Electron Systems 2005, July
26-30, 2005, Vienna, Austria.
- H. J. Im, B. H. Min, Y. S. Kwon, D. L. Kim and H.-C. Ri
Physical properties of the antiferromagnetic dense Kondo system Ce2CuxNi1−xGe6
The International Conference on Strongly Correlated Electron Systems 2001, July
2001, Michigan, USA.
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