8 citations · 13 across the 2 of their papers we have counts for
6 papers
Peculiar from-Edge-to-Interior Spin Freezing in a Magnetic Dipolar Cube
Katsuyoshi Matsushita, Ryoko Sugano, Akiyoshi Kuroda +2
By molecular dynamics simulation, we have investigated classical Heisenberg spins, which are arrayed on a finite simple cubic lattice and interact with each other only by the dipol…
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…
Anomalously Soft Droplets and Aging in Short-ranged Spin Glasses
Hajime Yoshino, Koji Hukushima, Hajime Takayama
We extend the standard droplet scaling theory for isothermal aging in spin glasses assuming that the effective stiffness constant of droplets as large as extended defects is vanish…
Real-Space Renormalization Group Study of Effects of Anisotropy on S=1 Random Antiferromagnetic Chain
Shigeru Koikegami, Synge Todo, Hajime Takayama
We investigate S=1 antiferromagnetic quantum spin chain, whose exchange couplings are strongly disordered. By the real-space renomalization group method, introduced by Ma, Dasgupta…
Numerical Study on Aging Dynamics in Ising Spin-Glass Models: Temperature-Change Protocols
Tatsuo Komori, Hajime Yoshino, Hajime Takayama
By means of Monte Carlo simulations on the three-dimensional Ising spin-glass model, we have studied aging phenomena with various temperature()-change protocols. Particularly, a…
Quantum Monte Carlo Study of Random Antiferromagnetic Heisenberg Chain
Synge Todo, Kiyoshi Kato, Hajime Takayama
Effects of randomness on the spin-1/2 and 1 antiferromagnetic Heisenberg chains are studied using the quantum Monte Carlo method with the continuous-time loop algorithm. We precise…