Volume 48, Number 6, December 1999
|Page(s)||699 - 705|
|Section||Condensed matter: electronic structure, electrical, magnetic and optical properties|
|Published online||01 September 2002|
A search for fluctuation-dissipation theorem violations in spin-glasses from susceptibility data
Laboratoire de Physique Théorique de l'Ecole Normale Supérieure de Paris, 24 rue Lhomond, F-75231 Paris Laboratoire de Physique Théorique et Hautes Energies, Universités de Paris VI and VII, Tour 24, 5ème étage - 4 Place Jussieu, F-75252 Paris, France
2 Service de Physique de l'Etat Condensé, CEA-Saclay - F-91191 Gif-sur-Yvette, France
3 Laboratoire de Physique de l'Ecole Normale Supérieure de Lyon, 46 Allée d'Italie, F-69364 Lyon, France
Accepted: 26 October 1999
We propose an indirect way of studying the fluctuation-dissipation relation in spin-glasses that only uses available susceptibility data. It is based on a dynamic extension of the Parisi-Toulouse approximation and a Curie-Weiss treatment of the average magnetic couplings. We present the results of the analysis of several sets of experimental data obtained from various samples.
PACS: 75.50.Lk – Spin glasses and other random magnets / 75.10.Nr – Spin glass and other random models / 75.40.Gb – Dynamic properties (dynamic susceptibility, spin waves, spin diffusion, dynamic scaling, etc.)
© EDP Sciences, 1999
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