CAN AGING PHENOMENA DISCRIMINATE BETWEEN THE DROPLET MODEL AND A HIERARCHICAL DESCRIPTION IN SPIN-GLASSES

被引：190

作者：

LEFLOCH, F

HAMMANN, J

OCIO, M

VINCENT, E

机构：

[1] Service de Physique de L’Etat Condensé, Gif-sur-Yvette, 91191, C. E. Saclay Orme des Merisiers

来源：

EUROPHYSICS LETTERS | 1992年 / 18卷 / 07期

关键词：

SPIN-GLASS MODELS; DYNAMIC PROPERTIES; SPIN GLASSES;

D O I：

10.1209/0295-5075/18/7/013

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We performed low-frequency (f = 0.1 Hz) a.c. susceptibility measurements on the CdCr1.7In0.3S4 insulating spin glass. The experiments were selected in an attempt to discriminate between the droplet model and a hierarchical picture characterized by a continuous splitting of the metastable states with decreasing temperatures. We studied the effect of small temperature changes on the aging of the out-of-phase susceptibility chi" below the freezing temperature T(g). We find that the predictions of the droplet model do not agree with some aspects of the results which appear as direct consequences of a hierarchical organization in phase space.

引用

页码：647 / 652

页数：6

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