Memory and superposition in a spin glass
Materials Science
2009-10-31 v2
Abstract
Non-equilibrium dynamics in a Ag(Mn) spin glass are investigated by measurements of the temperature dependence of the remanent magnetisation. Using specific cooling protocols before recording the thermo- or isothermal remanent magnetisations on re-heating, it is found that the measured curves effectively disclose non-equilibrium spin glass characteristics such as ageing and memory phenomena as well as an extended validity of the superposition principle for the relaxation. The usefulness of this "simple" dc-method is discussed, as well as its applicability to other disordered magnetic systems.
Cite
@article{arxiv.cond-mat/0007070,
title = {Memory and superposition in a spin glass},
author = {R. Mathieu and P. Jönsson and D. N. H. Nam and P. Nordblad},
journal= {arXiv preprint arXiv:cond-mat/0007070},
year = {2009}
}
Comments
REVTeX style; 8 pages, 4 figures