Temperature (T) dependence of heat capacity C(T) in the S=1/2 Kitaev honeycomb model shows a double-peak structure resulting from fractionalization of spins into two kinds of Majorana fermions. Recently it has been discussed that the double-peak s...
Takafumi Suzuki   Sei-Ichiro Suga   
Physical Review B 97(13) 134424-134424 2018年4月 [査読有り]
We use an exact numerical diagonalization method to calculate the dynamical spin structure factors of three ab initio models and one ab initio guided model for a honeycomb-lattice magnet α-RuCl3. We also use thermal pure quantum states to calculat...
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 ...