Binder parameter of a Heisenberg spin-glass model in four dimensions
Abstract
We studied the phase transition of the ±J Heisenberg model with and without a random anisotropy on four-dimensional lattice L×L×L×(L+1)(L<~9). We showed that the Binder parameters g(L,T)’s for different sizes do not cross even when the anisotropy is present. On the contrary, when a strong anisotropy exists, g(L,T) exhibits a steep negative dip near the spin-glass phase-transition temperature TSG similarly to the p-state infinite-range Potts glass model with p>~3, in which the one-step replica-symmetry breaking (RSB) occurs. We speculated that a one-step RSB-like state occurs below TSG, which breaks the usual crossing behavior of g(L,T).
Journal
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- Physical Review B
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Physical Review B 67 (10), 100405-1-100405-4, 2003-01-01
American Physical Society
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Details 詳細情報について
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- CRID
- 1050001202678531840
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- NII Article ID
- 120001763673
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- ISSN
- 10980121
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- Article Type
- journal article
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- Data Source
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- IRDB
- CiNii Articles