123 citations · 312 across the 24 of their papers we have counts for
24 papers
Effects of bond-randomness and Dzyaloshinskii-Moriya interactions on the specific heat at low temperatures of a spherical kagomé cluster in {WV}
Mikio Motohashi, Kouki Inoue, Katsuhiro Morita +2
For the spin-1/2 spherical kagomé cluster, as well as for the 2D kagomé lattice, many low-energy singlet excitations have been expected to exist in the energy region below the spin…
Structures of magnetic excitations in the spin-1/2 kagome-lattice antiferromagnets CsCuSnF and RbCuSnF
Mutsuki Saito, Ryunosuke Takagishi, Nobuyuki Kurita +6
We show the structures of magnetic excitations in spin-1/2 kagome-lattice antiferromagnets CsCuSnF and RbCuSnF investigated by inelastic neutron scatt…
Quantum dimer model containing Rokhsar-Kivelson point expressed by spin-1/2 Heisenberg antiferromagnets
Yuhei Hirose, Akihide Oguchi, Yoshiyuki Fukumoto
We obtain a quantum dimer model (QDM) containing a Rokhsar-Kivelson (RK) point expressed by spin-1/2 Heisenberg antiferromagnets on a diamond-like decorated square lattice. This la…
-wave density wave and -wave superconducting gap on the extended Hubbard model on a square lattice
Yuhei Hirose, Akihide Oguchi, Yoshiyuki Fukumoto
The extended Hubbard model with a nearest-neighbor Coulomb repulsion on the square lattice is studied to obtain insight into the phase diagram of cuprate high superconductors…
Typical Purification Reproducing the Time Evolution of an Open Quantum System
Koki Inoue, Yoshiyuki Fukumoto
It is known that an arbitrary quantum state can always be expressed in a pure state by preparing an appropriate ancilla system, which is called purification. The purification can a…
Novel constructive method for the quantum dimer model in spin-1/2 Heisenberg antiferromagnets with frustration on a diamond-like-decorated square lattice
Yuhei Hirose, Akihide Oguchi, Masafumi Tamura +1
We study spin-1/2 Heisenberg antiferromagnets on a diamond-like-decorated square lattice. The diamond-like-decorated square lattice is a lattice in which the bonds in a square latt…