Low temperature nonequilibrium dynamics in transverse Ising spin glass

被引：0
作者：
G. Busiello
R. V. Saburova
V. G. Sushkova
机构：
[1] Universitá di Salerno,Dipartimento di Fisica “E.R. Caianiello”
[2] Unitá di Salerno,INFM
[3] Kazan State Power-Engineering University,undefined
来源：
The European Physical Journal B - Condensed Matter and Complex Systems | 2004年 / 39卷
关键词：
Glass Transition; Glass Transition Temperature; Dynamical Property; Linear Response; Spin Glass;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The real part of the time-dependent ac susceptibility of the short-range Ising spin glass in a transverse field has been investigated at very low temperatures. We have used the quantum linear response theory and domain coarsening ideas of quantum droplet scaling theory. It is found that after a temperature quench to a temperature T1 (lower than the spin glass transition temperature Tg) the ac susceptibility decreases with time approximately in a logarithmic way as the system tends to the equilibrium. It is shown that the transverse field of “tunneling” has unessential effect on the nonequilibrium dynamical properties of the magnetic droplet system. The role of quantum fluctuations in the behavior of the ac susceptibility is discussed.
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页码：69 / 76
页数：7
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