A zero-temperature study of vortex mobility in two-dimensional vortex glass models

被引：7

作者：

Holme, P ^{[1
]}

Olsson, P ^{[1
]}

机构：

[1] Umea Univ, Dept Phys, S-90187 Umea, Sweden

来源：

EUROPHYSICS LETTERS | 2002年 / 60卷 / 03期

关键词：

D O I：

10.1209/epl/i2002-00283-5

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Three different vortex glass models are studied by examining the energy barrier against vortex motion cross the system. In the two-dimensional gauge glass this energy barrier is found to increase logarithmically with system size which opens up for the existence of low-temperature phase with zero resistivity. Associated with the large-energy barriers is breaking of ergodicity which explains why the well-established results from equilibrium studies could fail. The behavior of the more realistic random pinning model is however different with decreasing energy barriers and no finite critical temperature.

引用

页码：439 / 445

页数：7

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