Título:
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Dynamical ac study of the critical behavior in Heisenberg spin glasses
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Autor/a:
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Picco, M.; Ritort Farran, Fèlix
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Otros autores:
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Universitat de Barcelona |
Abstract:
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We present some numerical results for the Heisenberg spin-glass model with Gaussian interactions, in a three dimensional cubic lattice. We measure the AC susceptibility as a function of temperature and determine an apparent finite temperature transition which is compatible with the chiral-glass temperature transition for this model. The relaxation time diverges like a power law $\tau\sim (T-T_c)^{-z\nu}$ with $T_c=0.19(4)$ and $z\nu=5.0(5)$. Although our data indicates that the spin-glass transition occurs at the same temperature as the chiral glass transition, we cannot exclude the possibility of a chiral-spin coupling scenario for the lowest frequencies investigated. |
Materia(s):
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-Vidres de spin -Propietats magnètiques -Magnetic properties -Spin glasses |
Derechos:
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(c) The American Physical Society, 2005
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Tipo de documento:
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Artículo Artículo - Versión publicada |
Editor:
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The American Physical Society
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Compartir:
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