55 citations · 356 across the 16 of their papers we have counts for
16 papers
Hybridization-gap Formation and Superconductivity in the Pressure-induced Semimetallic Phase of the Excitonic Insulator TaNiSe
Kazuyuki Matsubayashi, Hidekazu Okamura, Takashi Mizokawa +19
The excitonic insulator TaNiSe experiences a first-order structural transition under pressure from rippled to flat layer-structure at Ps = 3 GPa, which drives the system fr…
Robust hybridization gap in a Kondo Insulator YbB probed by femtosecond optical spectroscopy
A. R. Pokharel, S. Y. Agustsson, V. V. Kabanov +4
In heavy fermions the relaxation dynamics of photoexcited carriers has been found to be governed by the low energy indirect gap, E, resulting from hybridization between local…
Optical Conductivity Study of Electron States in YbCuGe at High Pressures to 20 GPa
H. Okamura, M. Nagata, A. Tsubouchi +3
Optical conductivity [] of YbCuGe has been measured at external pressures () to 20 GPa, to study the evolution of electron hybridized states. At =0, $σ(…
Infrared and Terahertz Spectroscopy of Strongly Correlated Electron Systems under Extreme Conditions
Shin-ichi Kimura, Hidekazu Okamura
Owing to its high brilliance, infrared and terahertz synchrotron radiation (IR/THz-SR) has emerged as a powerful tool for spectroscopy under extreme (i.e., technically more difficu…
Pressure suppression of unconventional charge-density-wave state in PrRu4P12 studied by optical conductivity
H. Okamura, N. Ohta, A. Takigawa +12
Optical conductivity s(w) of PrRu4P12 has been studied under high pressure to 14 GPa, at low temperatures to 8 K, and at photon energies 12 meV-1.1 eV. The energy gap in s(w) at am…
Optical Conductivity and Electronic Structure of CeRu4Sb12 under High Pressure
H. Okamura, R. Kitamura, M. Matsunami +6
Optical conductivity [s(w)] of Ce-filled skutterudite CeRu4Sb12 has been measured at high pressure to 8 GPa and at low temperature, to probe the pressure evolution of its electroni…