191 citations · 625 across the 10 of their papers we have counts for
10 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…
Reversed Crystal-Field Splitting and Spin-Orbital Ordering in -SrCrO
T. Ishikawa, T. Toriyama, T. Konishi +2
The origin of successive phase transitions observed in the layered perovskite -SrCrO is studied by the density-functional-theory-based electronic structure calculation a…
Novel Electronic Structures of Ru-Pnictides Ru ( = P, As, Sb)
H. Goto, T. Toriyama, T. Konishi +1
Density-functional-theory-based electronic structure calculations are made to consider the novel electronic states of Ru-pnictides RuP and RuAs where the intriguing phase transitio…
Excitonic Bose-Einstein condensation in Ta2NiSe5 above room temperature
K. Seki, Y. Wakisaka, T. Kaneko +12
We show that finite temperature variational cluster approximation (VCA) calculations on an extended Falicov-Kimball model can reproduce angle-resolved photoemission spectroscopy (A…
Switching of Conducting Planes by Partial Dimer Formation in IrTe
Tatsuya Toriyama, Masao Kobori, Takehisa Konishi +7
Single-crystal X-ray diffraction was employed to study the structural-electronic phase transition of IrTe at approximately 270 K. The low-temperature structure was found to be…
Te 5p orbitals bring three-dimensional electronic structure to two-dimensional Ir0.95Pt0.05Te2
D. Ootsuki, T. Toriyama, M. Kobayashi +13
We have studied the nature of the three-dimensional multi-band electronic structure in the twodimensional triangular lattice Ir1-xPtxTe2 (x=0.05) superconductor using angle-resolve…
Important Roles of Te 5p and Ir 5d Spin-orbit Interactions on the Multi-band Electronic Structure of Triangular Lattice Superconductor Ir1-xPtxTe2
D. Ootsuki, T. Toriyama, M. Kobayashi +15
We report an angle-resolved photoemission spectroscopy (ARPES) study on a triangular lattice superconductor IrPtTe in which the Ir-Ir or Te-Te bond formation, the…
Orthorhombic-to-Monoclinic Phase Transition of Ta2NiSe5 Induced by the Bose-Einstein Condensation of Excitons
T. Kaneko, T. Toriyama, T. Konishi +1
Using the band structure calculation and mean-field analysis of the derived three-chain Hubbard model with phonon degrees of freedom, we discuss the origin of the orthorhombic-to-m…
Peierls Mechanism of the Metal-Insulator Transition in Ferromagnetic Hollandite K2Cr8O16
T. Toriyama, A. Nakao, Y. Yamaki +10
Synchrotron X-ray diffraction experiment shows that the metal-insulator transition occurring in a ferromagnetic state of a hollandite KCrO is accompanied by a struct…
Potential antiferromagnetic fluctuations in hole-doped iron-pnictide superconductor Ba_{1-x}K_{x}Fe_{2}As_{2} studied by ^{75}As nuclear magnetic
Masanori Hirano, Yuji Yamada, Taku Saito +11
We have performed ^{75}As nuclear magnetic resonance (NMR) and nuclear quadrupole resonance (NQR) on single crystalline Ba_{1-x}K_{x}Fe_{2}As_{2} for x = 0.27-1. ^{75}As nuclear qu…