Volume 62, Number 6, June 2003
|Page(s)||869 - 875|
|Section||Condensed matter: structure, mechanical and thermal properties|
|Published online||01 June 2003|
Frequency-domain study of relaxation in a spin glass model for the structural glass transition
Department of Biochemistry, University of Zurich Winterthurerstrasse 190, CH-8057 Zurich, Switzerland
2 Dipartimento di Fisica, Università di Roma “La Sapienza” and INFM, unità di Roma, I and SMC - P. le A. Moro 2, 00185, Roma, Italy
3 Departament de Física Fonamental, Facultat de Física, Universitat de Barcelona Diagonal 647, 08028 Barcelona, Spain
Accepted: 22 April 2003
We have computed the time-dependent susceptibility for the finite-size mean-field random orthogonal model (ROM). We find that for temperatures above the mode-coupling temperature, the imaginary part of the susceptibility obeys the scaling forms proposed for glass-forming liquids. Furthermore, as the temperature is lowered the peak frequency of decreases, following a Vogel-Fulcher law with a critical temperature remarkably close to the known critical temperature , where the configurational entropy vanishes.
PACS: 64.60.-i – General studies of phase transitions / 64.70.Pf – Glass transitions / 75.10.Nr – Spin-glass and other random models
© EDP Sciences, 2003
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