T. Suzuki   Y. Tomita   N. Kawashima   
PHYSICAL REVIEW B 82(21) 214404 2010年12月 [査読有り]
We study the finite-temperature transition to the m=1/2 magnetization plateau in a model of interacting S=1/2 spins with longer-range interactions and strong exchange anisotropy on the geometrically frustrated Shastry-Sutherland lattice. This mode...
INTERNATIONAL CONFERENCE ON MAGNETISM (ICM 2009) 200 2010年 [査読有り]
We study magnetic properties of the S=1/2 Ising-like XXZ model on the Shastry-Sutherland lattices considering the effect of long range interactions. By performing quantum Monte Carlo simulations, we find that magnetization plateau phases appear at...
We study magnetic properties of the spin-1/2 Ising-like XXZ model on the Shastry-Sutherland lattices with long-range interactions, using the quantum Monte Carlo method. This model shows magnetization plateau phases at one-half and one-third of the...
Toshihiro Sato   Takafumi Suzuki   Naoki Kawashima   
25TH INTERNATIONAL CONFERENCE ON LOW TEMPERATURE PHYSICS (LT25), PART 3 150 2009年 [査読有り]
We study the finite-temperature transition of the quasi-2D Bose gas in an uniaxially-compressed harmonic trap by numerically solving the projected Gross-Pitaevskii equation. Gradual emergence of superfluidity is confirmed by calculating the moment...
A numerical algorithm to calculate exact finite-temperature spectra of<br />
many-body lattice Hamiltonians is formulated by combining the typicality<br />
approach and the shifted Krylov subspace method. The combined algorithm, which<br />
we nam...
Takafumi Suzuki   Masahiro Sato   
2015年5月
We study the boundary nature of trapped bosonic Mott insulators in optical<br />
square lattices, by performing quantum Monte Carlo simulation. We show that a<br />
finite superfluid density generally emerges in the incommensurate-filling (IC)<br ...