7 citations · 7 across the 1 of their papers we have counts for
7 papers
Pressure-Induced Restoration of the Reversed Crystal-Field Splitting in -SrCrO
Ryo Takahashi, Tomoki Yamaguchi, Koudai Sugimoto +3
Motivated by an experimental finding that the successive phase transitions in -SrCrO observed at ambient pressure ceases to exist under high pressures, we carry out the…
Finite-temperature properties of excitonic condensation in the extended Falicov-Kimball model: Cluster mean-field-theory approach
Masahiro Kadosawa, Satoshi Nishimoto, Koudai Sugimoto +1
We study the electron-hole pair (or excitonic) condensation in the extended Falicov-Kimball model at finite temperatures based on the cluster mean-field-theory approach, where we m…
Emergence of pure spin current in doped excitonic magnets
Shunsuke Yamamoto, Koudai Sugimoto, Yukinori Ohta
An excitonic magnet hosts a condensate of spin-triplet excitons composed of conduction-band electrons and valence-band holes, and may be described by the two-orbital Hubbard model.…
Superconductivity and charge density wave under a time-dependent periodic field in the one-dimensional attractive Hubbard model
Ryo Fujiuchi, Tatsuya Kaneko, Koudai Sugimoto +2
We investigate the competition between superconductivity (SC) and charge density wave (CDW) under a time-dependent periodic field in the attractive Hubbard model. By employing the…
Typicality-Based Variational Cluster Approach to Thermodynamic Properties of the Hubbard Model
Hisao Nishida, Ryo Fujiuchi, Koudai Sugimoto +1
We develop the variational-cluster-approximation method based on the thermal-pure-quantum-state approach and apply the method to the calculations of the thermodynamic properties of…
Quantum phase transitions in the dimerized extended Bose-Hubbard model
Koudai Sugimoto, Satoshi Ejima, Florian Lange +1
We present an unbiased numerical density-matrix renormalization group study of the one-dimensional Bose-Hubbard model supplemented by nearest-neighbor Coulomb interaction and bond…