Temperature cycles in the Heisenberg spin glass

L. Berthier and A. P. Young
Phys. Rev. B 71, 214429 – Published 30 June 2005

Abstract

We study numerically the nonequilibrium dynamics of the three-dimensional Heisenberg Edwards-Anderson spin glass submitted to protocols during which temperature is shifted or cycled within the spin glass phase. We show that (partial) rejuvenation and (perfect) memory effects can be numerically observed and study both effects in detail. We quantitatively characterize their dependences on parameters such as the amplitude of the temperature changes, the time scale at which the changes are performed, and the cooling rates used to vary the temperature. We contrast our results both to those found numerically in the Ising version of the model, and to experimental results in different samples. We discuss the theoretical interpretations of our findings, arguing, in particular, that “full” rejuvenation can be observed in experiments even if temperature chaos is absent.

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  • Received 1 March 2005

DOI:https://doi.org/10.1103/PhysRevB.71.214429

©2005 American Physical Society

Authors & Affiliations

L. Berthier*

  • Laboratoire des Colloïdes, Verres et Nanomatériaux, Université Montpellier II and UMR 5587 CNRS, 34095 Montpellier Cedex 5, France

A. P. Young

  • Department of Physics, University of California, Santa Cruz, California 95064, USA

  • *Electronic address: berthier@lcvn.univ-montp2.fr; URL: http://w3.lcvn.univ-montp2.fr/̃berthier
  • Electronic address: peter@bartok.ucsc.edu; URL: http://bartok.ucsc.edu/peter

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Issue

Vol. 71, Iss. 21 — 1 June 2005

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