182 citations · 1.1k across the 44 of their papers we have counts for
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Quantum phase transitions of spin chiral nanotubes
Munehisa Matsumoto, Toru Sakai, Masahiro Sato +2
Recently many interesting magnetic nanostructures have been fabricated and much attention is arising on the rich magnetic properties that originate in the quantum effects eminent i…
Quantum Monte Carlo Simulations of the Impurity-Induced Phase Transitions in Low-Dimensional Magnets
Munehisa Matsumoto, Hajime Takayama
We study the impurity-induced phase transitions in a quasi-one-dimensional Heisenberg antiferromagnet doped with magnetic spin-1/2 impurities and non-magnetic ones. The impurity-in…
Effects of Impurities in Quasi-One-Dimensional S=1 Antiferromagnets
Munehisa Matsumoto, Hajime Takayama
For the weakly coupled S=1 antiferromagnetic Heisenberg chains on a simple cubic lattice, the effects of magnetic impurities are investigated by the quantum Monte Carlo method with…
Quantum Phase Transitions of Quasi-One-Dimensional Heisenberg Antiferromagnets
Munehisa Matsumoto, Synge Todo, Chitoshi Yasuda +1
We study the ground-state phase transitions of quasi-one-dimensional quantum Heisenberg antiferromagnets by the quantum Monte Carlo method with the continuous-time loop algorithm a…
Ground state of antiferromagnetic Heisenberg two-leg ladder in terms of the valence-bond solid picture
Munehisa Matsumoto, Synge Todo, Masaaki Nakamura +2
We have proposed the plaquette-singlet solid (PSS) ground state for the spin-1 antiferromagnetic Heisenberg two-leg ladder. Based on the PSS picture, we discuss the correspondence…
Ground-State Phase Diagram of Quantum Heisenberg Antiferromagnets on the Anisotropic Dimerized Square Lattice
Munehisa Matsumoto, Chitoshi Yasuda, Synge Todo +1
The S=1/2 and S=1 two-dimensional quantum Heisenberg antiferromagnets on the anisotropic dimerized square lattice are investigated by the quantum Monte Carlo method. By finite-size…
Plaquette-singlet solid state and topological hidden order in spin-1 antiferromagnetic Heisenberg ladder
Synge Todo, Munehisa Matsumoto, Chitoshi Yasuda +1
Ground-state properties of the spin-1 two-leg antiferromagnetic ladder are investigated precisely by means of the quantum Monte Carlo method. It is found that the correlation lengt…