Aging behavior of spin glasses under bond and temperature perturbations from laser illumination

Ryuta Arai, Katsuyoshi Komatsu, Tetsuya Sato

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

We have studied the nonequilibrium dynamics of spin glasses subjected to bond perturbation, which was based on the direct change in the spin-spin interaction ΔJ, using photoillumination in addition to temperature change ΔT. Differences in time-dependent magnetization are observed between that under ΔT+ΔJ and ΔT perturbations with the same ΔT. These differences show the contribution of ΔJ to spin-glass dynamics through the decrease in the overlap length. That is, the overlap length LΔT+ΔJ under ΔT+ΔJ perturbation is less than LΔT under ΔT perturbation. Furthermore, we observe the crossover between weakly and strongly perturbed regimes under bond cycling accompanied by temperature cycling. These effects of bond perturbation strongly indicate the existence of both chaos and the overlap length.

Original languageEnglish
Article number144424
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume75
Issue number14
DOIs
Publication statusPublished - 2007 Apr 23

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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