32 citations · 59 across the 3 of their papers we have counts for
5 papers
Mott insulating state in a quarter-filled two-orbital Hubbard chain with different bandwidths
S. Miyashita, Y. Yamashita, K. Yonemitsu +2
We investigate the ground-state properties of the one-dimensional two-band Hubbard model with different bandwidths. The density-matrix renormalization group method is applied to ca…
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…
Charge ordering in θ-(BEDT-TTF)2RbZn(SCN)4: Cooperative effects of electron correlations and lattice distortions
Satoshi Miyashita, Kenji Yonemitsu
Combined effects of electron correlations and lattice distortions are investigated on the charge ordering in θ-(BEDT-TTF)2RbZn(SCN)4 theoretically in a two-dimensional 3/4-filled e…
One-Dimensional S=1 Spin-Orbital Model with Uniaxial Single-Ion Anisotropy
Satoshi Miyashita, Norio Kawakami
We investigate ground-state properties of a one-dimensional S=1 spin-orbital model with or without uniaxial single-ion anisotropy. By means of the density matrix renormalization gr…
Quantum Phase Transitions in the One-Dimensional S=1 Spin-Orbital Model: Implications for Cubic Vanadates
Satoshi Miyashita, Akira Kawaguchi, Norio Kawakami +1
We investigate ground-state properties and quantum phase transitions in the one-dimensional S=1 spin-orbital model relevant to cubic vanadates. Using the density matrix renormaliza…