Y. Nishiyama

collaborators

2 papers

cond-mat.stat-mech2025

Two-dimensional transverse-field $X Y$ model with the in-plane anisotropy and Dzyaloshinskii-Moriya interaction: Anisotropy-driven transition

Yoshihiro Nishiyama

The two-dimensional (2D) quantum spin- $S = 1/2$ $X Y$ model with the transverse-field $H$ , in-plane-anisotropy $I^^{3}$ , and Dzyaloshinskii-Moriya (DM) $D$ interactions was investigated b…

cond-mat.stat-mech2024

$X Y$ -VBS phase boundary for the square-lattice $J_{1}$ - $J_{2}$ $X X Z$ model with the ring exchange

Yoshihiro Nishiyama

The square-lattice $J_{1}$ - $J_{2}$ $X X Z$ model with the ring-exchange interaction $K$ was investigated numerically. As for the hard-core-boson model with the nearest-neighbor hopping $…

Two-dimensional transverse-field XY model with the in-plane anisotropy and Dzyaloshinskii-Moriya interaction: Anisotropy-driven transition

XY-VBS phase boundary for the square-lattice J1​-J2​ XXZ model with the ring exchange

Two-dimensional transverse-field $X Y$ model with the in-plane anisotropy and Dzyaloshinskii-Moriya interaction: Anisotropy-driven transition

$X Y$ -VBS phase boundary for the square-lattice $J_{1}$ - $J_{2}$ $X X Z$ model with the ring exchange