142 citations · 660 across the 50 of their papers we have counts for
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cond-mat.stat-mech2005★ 29 cited
The dynamic exponent of the Ising model on negatively curved surfaces
Hiroyuki Shima, Yasunori Sakaniwa
We investigate the dynamic critical exponent of the two-dimensional Ising model defined on a curved surface with constant negative curvature. By using the short-time relaxation met…
cond-mat.stat-mech2005★ 57 cited
Geometric effects on critical behaviours of the Ising model
Hiroyuki Shima, Yasunori Sakaniwa
We investigate the critical behaviour of the two-dimensional Ising model defined on a curved surface with a constant negative curvature. Finite-size scaling analysis reveals that t…
cond-mat.mtrl-sci2005★ 6 cited
Interacting quantum rotors in oxygen-doped germanium
Hiroyuki Shima, Tsuneyoshi Nakayama
We investigate the interaction effect between oxygen impurities in crystalline germanium on the basis of a quantum rotor model. The dipolar interaction of nearby oxygen impurities…