Relaxation of the Spin Autocorrelation Function in the Ising Spin Glass

Hiroshi Takano, Seiji Miyashita

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

Relaxation phenomena are studied for the ±J Ising spin glass in two dimensions by Monte Carlo method. For each spin, a representative relaxation time of the spin is estimated from the equilibrium autocorrelation function of the spin. Clusters of slowly relaxing spins are found to exist below the critical temperature of the nonrandom Ising ferromagnet. It is also found that the distribution of the relaxation times of spins is consistent with the prediction of the theory which assumes independent motion of clusters. This distribution explains the nonexponential decay of the averaged spin autocorrelation function as in the case of the diluted Ising ferromagnets.

Original languageEnglish
Pages (from-to)423-429
Number of pages7
JournalJournal of the Physical Society of Japan
Volume64
Issue number2
DOIs
Publication statusPublished - 1995 Feb

Keywords

  • Monte Carlo simulations
  • relaxation
  • spin autocorrelation function
  • the Griffiths singularity
  • the Ising spin glass

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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