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Predominant Magnetic States in Hubbard Model on Anisotropic Triangular Lattices
Tsutomu Watanabe, Hisatoshi Yokoyama, Yukio Tanaka +1
Using an optimization variational Monte Carlo method, we study the half-filled-band Hubbard model on anisotropic triangular lattices, as a continuation of the preceding study [J. P…
Charge transport in two dimensional electron gas/superconductor junctions with Rashba spin-orbit coupling
T. Yokoyama, Y. Tanaka, J. Inoue
We have studied the tunneling conductance in two dimensional electron gas / insulator / superconductor junctions in the presence of Rashba spin-orbit coupling (RSOC). It is found t…
Superconductivity and a Mott Transition in a Hubbard Model on an Anisotropic Triangular Lattice
Tsutomu Watanabe, Hisatoshi Yokoyama, Yukio Tanaka +1
A half-filled-band Hubbard model on an anisotropic triangular lattice (t in two bond directions and t' in the other) is studied using an optimization variational Monte Carlo method…
Intrinsically s-wave like property of triplet superconductors with spin-orbit coupling
T. Yokoyama, Y. Tanaka, J. Inoue
We have studied a general property of unconventional superconductors with spin-orbit coupling by solving the Bogoliubov-de Gennes equation and found that the two of four eigenfunct…
Nonmonotonic d_{x^2-y^2}-Wave Superconductivity in Electron-Doped Cuprates Viewing from the Strong-Coupling Side
Tsutomu Watanabe, Takafumi Miyata, Hisatoshi Yokoyama +2
Applying a variational Monte Carlo method to a two-dimensional t-J model, we study the nonmonotonic d_{x^2-y^2}-wave superconductivity, observed by Raman scattering and ARPES exper…
Variational Monte Carlo studies of a t-J model on an anisotropic triangular lattice
Tsutomu Watanabe, Hisatoshi Yokoyama, Yukio Tanaka +2
With the insulating phase of κ-(BEDT-TTF)_2X in mind, we study a t-J model on an anisotropic triangular lattice, where the hopping integral is t' in one of the three directions, us…