CURRENT-VOLTAGE CHARACTERISTICS OF 2-DIMENSIONAL VORTEX-GLASS MODELS

被引：74

作者：

HYMAN, RA

WALLIN, M

FISHER, MPA

GIRVIN, SM

YOUNG, AP

机构：

[1] ROYAL INST TECHNOL,DEPT THEORET PHYS,S-10044 STOCKHOLM,SWEDEN

[2] UNIV CALIF SANTA BARBARA,INST THEORET PHYS,SANTA BARBARA,CA 93106

[3] UNIV CALIF SANTA CRUZ,DEPT PHYS,SANTA CRUZ,CA 95064

来源：

PHYSICAL REVIEW B | 1995年 / 51卷 / 21期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1103/PhysRevB.51.15304

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We have performed Monte Carlo simulations to determine current-voltage characteristics of two vortex-glass models in two dimensions. Our results confirm earlier studies which concluded that there is a zero-temperature transition. Additionally we find that, as the temperature approaches zero, the linear resistance vanishes exponentially, and the current scale Jnl where nonlinearities appear in the current-voltage characteristics, varies roughly as T3. This result is quite different from the prediction of conventional flux creep theory in which Jnl∼T. The results for the two models agree quite well with each other, and also agree fairly well with recent experiments on very thin films of Y-Ba-Cu-O. © 1995 The American Physical Society.

引用

页码：15304 / 15311

页数：8

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