Comparative review of aging properties in spin glasses and other disordered materials

TL;DR

This paper reviews aging phenomena across various disordered materials, highlighting similarities and differences, especially focusing on spin glasses and the effects of temperature and cooling rate on aging behaviors.

Contribution

It provides a comparative analysis of aging in spin glasses and other disordered materials, emphasizing the roles of temperature, cooling rate, and wall depinning processes.

Findings

Aging behaviors are sensitive to cooling rate and temperature variations.

Rejuvenation and memory effects are linked to temperature-specific processes.

Wall depinning processes influence rejuvenation and memory effects in disordered ferromagnets.

Abstract

Aging phenomena have been studied in very different materials like polymers, supercooled liquids or disordered orientational crystals. We recall here the main features of aging in spin glasses, and use this example of magnetic systems as a guideline for the description of the others. A particular attention is put on the sensitivity of aging to the cooling rate and to temperature variations. This allows us to point out differences between temperature specific processes, yielding ``rejuvenation and memory effects'' as known in spin glasses, and domain growth processes, giving cumulative contributions at different temperatures. The relevance of wall depinning processes to rejuvenation and memory effects is discussed at the light of recent results on disordered ferromagnets.