123 citations · 142 across the 5 of their papers we have counts for
5 papers
Rhenium oxyhalides: a showcase for anisotropic-triangular-lattice quantum antiferromagnets
M. Gen, D. Hirai, K. Morita +9
The spin-1/2 Heisenberg antiferromagnet on an anisotropic triangular lattice (ATL) is an archetypal spin system hosting exotic quantum magnetism and dimensional crossover. However,…
A Series Expansion Study for Large Negative Quantum Renormalization of Magnon Spectra in the Kagome-Lattice Heisenberg Antiferromagnet CsCuSnF
Singo Kogure, Masashi Takeda, Katsuhiro Morita +3
The series expansion method is used to study magnon spectra of the kagome system with nearest-neighbor exchange interaction and out-of-plane Dzyaloshinskii-Moriya (DM) interact…
Gapless chirality liquid with symmetry-protected edge spins
Shunsuke C. Furuya, Katsuhiro Morita
We report that a spin-1/2 tetrahedral Heisenberg chain realizes a gapless symmetry-protected topological (gSPT) phase characterized by the coexistence of the Tomonaga-Luttinger-liq…
Multiple Magnetization Plateaus and the Magnetic Structures in Heisenberg Model on the Checkerboard Lattice
Katsuhiro Morita, Naokazu Shibata
We study the ground state of Heisenberg model on the checkerboard lattice in a magnetic field by the density matrix renormalization group (DMRG) method with the sine-squa…
Pinwheel VBS state and triplet excitations in the two-dimensional deformed kagome lattice
K. Matan, T. Ono, Y. Fukumoto +5
Determining ground states of correlated electron systems is fundamental to understanding novel phenomena in condensed matter physics. A difficulty, however, arises in a geometrical…