Please use this identifier to cite or link to this item: http://hdl.handle.net/2445/10879
Title: Chaotic, memory, and cooling rate effects in spin glasses: Evaluation of the Edwards-Anderson model
Author: Picco, M.
Ricci-Tersenghi, F.
Ritort Farran, Fèlix
Keywords: Propietats magnètiques
Física estadística
Termodinàmica
Sistemes dinàmics diferenciables
Teories no lineals
Caos (Teoria de sistemes)
Vidres de spin
Magnetic properties
Nonlinear dynamical systems
Statistical physics
Thermodynamics
Differentiable dynamical systems
Nonlinear theories
Chaotic behavior in systems
Spin glasses
Issue Date: 2001
Publisher: The American Physical Society
Abstract: We investigate chaotic, memory, and cooling rate effects in the three-dimensional Edwards-Anderson model by doing thermoremanent (TRM) and ac susceptibility numerical experiments and making a detailed comparison with laboratory experiments on spin glasses. In contrast to the experiments, the Edwards-Anderson model does not show any trace of reinitialization processes in temperature change experiments (TRM or ac). A detailed comparison with ac relaxation experiments in the presence of dc magnetic field or coupling distribution perturbations reveals that the absence of chaotic effects in the Edwards-Anderson model is a consequence of the presence of strong cooling rate effects. We discuss possible solutions to this discrepancy, in particular the smallness of the time scales reached in numerical experiments, but we also question the validity of the Edwards-Anderson model to reproduce the experimental results.
Note: Reproducció digital del document publicat en format paper, proporcionada per PROLA i http://dx.doi.org/10.1103/PhysRevB.63.174412
It is part of: Physical Review B, 2001, vol. 63, núm. 17, p. 174412-1-174412-12
URI: http://hdl.handle.net/2445/10879
ISSN: 0163-1829
Appears in Collections:Articles publicats en revistes (Física de la Matèria Condensada)

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