1k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- The Graduate University for Advanced Studies, SOKENDAIJP143 papers
- National Institutes of Natural SciencesJP76 papers
- The University of TokyoJP75 papers
- The University of OsakaJP59 papers
- Kyoto UniversityJP52 papers
- Tohoku UniversityJP46 papers
- Japan Science and Technology AgencyJP32 papers
- Nagoya UniversityJP30 papers
- Hiroshima UniversityJP27 papers
- High Energy Accelerator Research OrganizationJP26 papers
- RIKENJP26 papers
- Tokyo Institute of TechnologyJP26 papers
13 papers · 1 filter
Electronic structure of heavily electron-doped BaFeCoAs studied by angle-resolved photoemission
Y. Sekiba, T. Sato, K. Nakayama +9
We have performed high-resolution angle-resolved photoemission spectroscopy on heavily electron-doped non-superconducting (SC) BaFeCoAs. We find that the two ho…
Fermi surface nesting induced strong pairing in iron-based superconductors
K. Terashima, Y. Sekiba, J. H. Bowen +10
The discovery of high-temperature superconductivity in iron pnictides raised the possibility of an unconventional superconducting mechanism in multiband materials. The observation…
Origin of Middle-Infrared Peaks in Cerium Compounds
Shin-ichi Kimura, Takuya Iizuka, Yong-seung Kwon
We have demonstrated that the middle-infrared (mid-IR) peaks in the optical conductivity spectra of Ce ( = Pd, Sn, In) can be explained by first-principle band structure ca…
Nonequilibrium mode-coupling theory for uniformly sheared systems
Song-Ho Chong, Bongsoo Kim
We develop a nonequilibrium mode-coupling theory for uniformly sheared systems starting from microscopic, thermostatted SLLOD equations of motion. Our theory aims at describing sta…
Spin and Charge Fluctuations and Lattice Effects on Charge Orders in α-(BEDT-TTF)_2I_3
Satoshi Miyashita, Kenji Yonemitsu
The effects of spin and charge fluctuations and electron-phonon couplings on charge ordering in α-(BEDT-TTF)_2I_3 (BEDT-TTF=bis(ethylenedithio)-tetrathiafulvalence) are investigate…
Enhanced coherent dynamics near a transition between neutral quantum-paraelectric and ionic ferroelectric phases in the quantum Blume-Emery-Griffiths model
Kenji Yonemitsu
Nonequilibrium dynamics are studied near the quantum phase transition point in the one-dimensional quantum Blume-Emery-Griffiths model. Its pseudo-spin component represents…
Excitonic Instability in the Transition from the Black Phase to the Golden Phase of SmS under Pressure Investigated by Infrared Spectroscopy
T. Mizuno, T. Iizuka, S. Kimura +4
We report the pressure-dependent optical reflectivity spectra of a strongly correlated insulator, samarium monosulfide (SmS), in the far- and middle-infrared regions to investigate…
Electronic inhomogeneity in EuO: Possibility of magnetic polaron states
S. Kimura, T. Ito, H. Miyazaki +3
We have observed the spatial inhomogeneity of the electronic structure of a single-crystalline electron-doped EuO thin film with ferromagnetic ordering by employing infrared magnet…
Coupling/decoupling between translational and rotational dynamics in a supercooled molecular liquid
Song-Ho Chong, Walter Kob
We use molecular dynamics computer simulations to investigate the coupling/decoupling between translational and rotational dynamics in a glass-forming liquid of dumbbells. This is…
Connections of activated hopping processes with the breakdown of the Stokes-Einstein relation and with aspects of dynamical heterogeneities
Song-Ho Chong
We develop a new extended version of the mode-coupling theory (MCT) for glass transition, which incorporates activated hopping processes via the dynamical theory originally formula…
Polaronic states with Spin-Charge-Coupled Excitation in a 1D Mott Insulator K-TCNQ
Nobuya Maeshima, Kenji Yonemitsu
We discuss photogenerated midgap states of a one-dimensional (1D) dimerized Mott insulator, potassium-tetracyanoquinodimethane (K-TCNQ). Two types of phonon modes are taken into ac…
Single-Component Molecular Metals as Multiband π-d Systems
Hitoshi Seo, Shoji Ishibashi, Yoshinori Okano +4
Electronic states of single-component molecular metals M(tmdt)2 (M = Ni, Au) are studied theoretically. We construct an effective three-band Hubbard model for each material by nume…
Charge Order with Structural Distortion in Organic Conductors: Comparison between θ-(ET)2RbZn(SCN)4 and α-(ET)2I3
Yasuhiro Tanaka, Kenji Yonemitsu
Charge ordering with structural distortion in quasi-two-dimensional organic conductors θ-(ET)2RbZn(SCN)4 (ET=BEDT-TTF) and α-(ET)2I3 is investigated theoretically. By using the Har…