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Proceedings Paper

Nonequilibrium dynamical effects in quantum spin glass
Author(s): Rigina V. Saburova; Eugene A. Yanvarev
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Paper Abstract

The real and imaginary part of the linear ac susceptibility and real nonlinear (cubic) ac susceptibility is investigated in terms of quantum spin glass droplet model. The temperature dependence and frequency one is calculated by analytical and numerical methods on the basis of the linear and nonlinear dynamical response theory in quantum mechanical systems. Slow quasi-equilibrium dynamics and divergence of the nonlinear ac susceptibility is found. Numerical calculations of frequency dependence illustrate the crossover between high and low frequency behaviors. It is supposed the existence of glass- like type transition at non-zero temperature while at zero temperature the results coincide with previous one.

Paper Details

Date Published: 15 November 2001
PDF: 4 pages
Proc. SPIE 4605, PECS 2001: Photon Echo and Coherent Spectroscopy, (15 November 2001); doi: 10.1117/12.447967
Show Author Affiliations
Rigina V. Saburova, Kazan State Power Engineering Univ. (Russia)
Eugene A. Yanvarev, Kazan State Power Engineering Univ. (Russia)

Published in SPIE Proceedings Vol. 4605:
PECS 2001: Photon Echo and Coherent Spectroscopy
Vitaly V. Samartsev, Editor(s)

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