Nonequilibrium dynamics of spin glasses: Examination of the ghost domain scenario

Article

关键词: CYCLING EXPERIMENTS;    TEMPERATURE CHAOS;    AGING DYNAMICS;    POLYMER GLASS;    DROPLET MODEL;    MEMORY;    PHASE;    RELAXATION;    BEHAVIOR;    ENERGY;   

DOI  :  10.1103/PhysRevB.70.174402

来源: SCIE

【 摘 要 】

Extensive experimental and numerical studies of the nonequilibrium dynamics of spin glasses subjected to temperature or bond perturbations have been performed to investigate chaos and memory effects in selected spin-glass systems. Temperature shift and cycling experiments were performed on the strongly anisotropic Ising-like system Fe0.5Mn0.5TiO3 and the weakly anisotropic Heisenberg-like system Ag(11 at% Mn), while bond shift and cycling simulations were carried out on a four-dimensional Ising Edwards-Anderson spin glass. These spin-glass systems display qualitatively the same characteristic features, and the observed memory phenomena are found to be consistent with predictions from the ghost-domain scenario of the droplet scaling model.

【 授权许可】

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