8 citations · 18 across the 3 of their papers we have counts for
6 papers · 1 filter
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…
"Glassy Dynamics" in Ising Spin Glasses -- Experiment and Simulation
Petra E. Jonsson, Hajime Takayama
The field-cooled magnetization (FCM) processes of Ising spin glasses under relatively small fields are investigated by experiment on Fe_{0.55}Mn_{0.45}TiO_3 and by numerical simula…
Dynamical breakdown of the Ising spin-glass order under a magnetic field
P. E. Jönsson, H. Takayama, H. Aruga Katori +1
The dynamical magnetic properties of an Ising spin glass FeMnTiO are studied under various magnetic fields. Having determined the temperature and static field…
Temperature Chaos and Bond Chaos in the Edwards-Anderson Ising Spin Glass : Domain-Wall Free-Energy Measurements
M. Sasaki, K. Hukushima, H. Yoshino +1
Domain-wall free-energy , entropy , and the correlation function, , of are measured independently in the four-dimensional Edwards-Anderson (EA) I…
Randomness-driven quantum phase transition in bond-alternating Haldane chain
Takayuki Arakawa, Synge Todo, Hajime Takayama
The effect of bond randomness on the spin-gapped ground state of the spin-1 bond-alternating antiferromagnetic Heisenberg chain is discussed. By using the loop cluster quantum Mont…
Absence of rejuvenation in a Superspin Glass
P. E. Jönsson, H. Yoshino, H. Mamiya +1
Effects of temperature changes on the nonequilibrium spin-glass dynamics of a strongly interacting ferromagnetic nanoparticle system (superspin glass) are studied. In contrary to a…