42 citations · 293 across the 19 of their papers we have counts for
10 papers · 1 filter
Ferromagnetic diagonal stripe states in the two-dimensional Hubbard model with
Mitake Miyazaki, Takashi Yanagisawa
We have performed a variational Monte Carlo simulation to study the ground state of a two-dimensional Hubbard model on a square lattice in the strong coupling region. The energy ga…
Phase diagram of the three-band d-p model based on the optimization variational Monte Carlo method
Takashi Yanagisawa, Mitake Miyazaki, Kunihiko Yamaji
The phase diagram of cuprate high-temperature superconductors is investigated on the basis of the three-band d-p model. We use the optimization variational Monte Carlo method, wher…
Phase diagram and mechanism of superconductivity in a strongly correlated electron system
Takashi Yanagisawa, Mitake Miyazaki, Kunihiko Yamaji
We investigate the phase diagram of two-dimensional (2D) Hubbard model by employing the optimization variational Monte Carlo method. The 2D Hubbard model is the most simple electro…
Mott transition in cuprate high-temperature superconductors
Takashi Yanagisawa, Mitake Miyazaki
In this study, we investigate the metal-insulator transition of charge transfer type in high-temperature cuprates. We first show that we must introduce a new band parameter in the…
Correlated-Electron Systems and High Temperature Superconductivity
Takashi Yanagisawa, Mitake Miyazaki, Kunihiko Yamaji
We present recent theoretical results on superconductivity in correlated-electron systems, especially in the two-dimensional Hubbard model and the three-band d-p model. The mechani…
Incommensurate Antiferromagnetism Coexisting with Superconductivity in Two-Dimensional d-p Model
Takashi Yanagisawa, Mitake Miyazaki, Kunihiko Yamaji
Numerical studies of the two-dimensional d-p model using the Gutzwiller ansatz have exhibited the incommensurate antiferromagnetic state coexisting with superconductivity in the un…
Variational Monte Carlo Study of a Spinless Fermion t-V Model on a Triangular Lattice: Formation of a Pinball Liquid
M. Miyazaki, C. Hotta, S. Miyahara +2
We analyze a model of spinless fermions on a triangular lattice at half-filling interacting via strong nearest-neighbor repulsive interactions, V, using the variational Monte Carlo…
Fermi arc in doped high-Tc cuprates
Takashi Yanagisawa, Mitake Miyazaki, Kunihiko Yamaji
We propose a -density wave induced by the spin-orbit coupling in the CuO plane. The spectral function of high-temperature superconductors in the under doped and lightly doped re…
Lattice distortions, incommensurability, and stripes in the electric model for high-Tc cuprates
Takashi Yanagisawa, Mitake Miyazaki, Shigeru Koikegami +2
Striped superconductivity with lattice distortions is investigated based on the three-band Hubbard model for high-Tc cuprates. A stable inhomogeneous striped state is determined in…
Stripe formation in high-Tc superconductors
Takashi Yanagisawa, Soh Koike, Mitake Miyazaki +1
The non-uniform ground state of the two-dimensional three-band Hubbard model for the oxide high-Tc superconductors is investigated using a variational Monte Carlo method. We examin…