265 citations · 3k across the 128 of their papers we have counts for
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Temperature Dependence of Spin and Bond Ordering in a Spin-Peierls System
Hiroaki Onishi, Seiji Miyashita
We investigate thermodynamic properties of a one-dimensional S=1/2 antiferromagnetic Heisenberg model coupled to a lattice distortion by a quantum Monte Carlo method. In particular…
Parity Effect in the Resonant Tunneling
Seiji Miyashita, Keiji Saito, Hiroto Kobayashi
A mechanism of the parity effect in the thermally assisted resonant tunneling is proposed in the view point of nonadiabatic transitions of thermally excited states. In this mechani…
Feedback Effect on Landau-Zener-Stueckelberg Transitions in Magnetic Systems
Anthony Hams, Hans De Raedt, Seiji Miyashita +1
We examine the effect of the dynamics of the internal magnetic field on the staircase magnetization curves observed in large-spin molecular magnets. We show that the size of the ma…
Local magnetic structure due to inhomogeneity of interaction in S=1/2 antiferromagnetic chain
Masamichi Nishino, Hiroaki Onishi, Pascal Roos +2
We study the magnetic properties of antiferromagnetic Heisenberg chains with inhomogeneity of interaction. Using a quantum Monte Carlo method and an exact diagonalization m…
Quantum Phase Transition of Randomly-Diluted Heisenberg Antiferromagnet on a Square Lattice
K. Kato, S. Todo, K. Harada +3
Ground-state magnetic properties of the diluted Heisenberg antiferromagnet on a square lattice are investigated by means of the quantum Monte Carlo method with the continuous-time…
Deceptive Apparent Nonadiabatic Magnetization Process
K. Saito, S. Miyashita, H. De Raedt
We discuss the effect of the thermal environment on the low-temperature response of the magnetization of uniaxial magnets to a time-dependent applied magnetic field. At sufficientl…