Volume 38, Number 8, June II 1997
|Page(s)||613 - 618|
|Section||Condensed matter: electronic structure, electrical, magnetic and optical properties|
|Published online||01 September 2002|
Age reinitialization in hierarchical relaxation models for spin-glass dynamics
Institut für Physik, Technische Universität - D-09107 Chemnitz, Germany
2 Fysisk Institut, Odense Universitet - Campusvej 55, DK-5230 Odense M, Denmark
Accepted: 9 May 1997
We show that thermal relaxation on a tree structure is reinitialized by a temperature pulse, similarly to the experimental behavior of spin-glasses. The models' behavior originates from fast dynamical modes being excited — a mechanism which goes beyond the usual quasi-equilibrium description of slow relaxation based on the concept of a free-energy landscape. We demonstrate the excellent agreement of the model predictions with the thermoremanent magnetization experiments and discuss some of the implications of the results for the understanding of complex relaxation.
PACS: 75.10.Nr – Spin-glass and other random models / 05.70.Ln – Nonequilibrium thermodynamics, irreversible processes / 05.40.+j – Fluctuation phenomena, random processes, and Brownian motion
© EDP Sciences, 1997
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.