Anomalous finite-size effect in superconducting Josephson junction arrays

被引：26

作者：

Chen, QH ^{[1
]}

Tang, LH

Tong, PQ

机构：

[1] Hong Kong Baptist Univ, Dept Phys, Kowloon Tong, Hong Kong, Peoples R China

[2] Zhejiang Univ, Dept Phys, Hangzhou 310027, Peoples R China

[3] Univ Calif Santa Barbara, Inst Theoret Phys, Santa Barbara, CA 93106 USA

[4] Nanjing Normal Univ, Dept Phys, Nanjing 210097, Jiangsu, Peoples R China

来源：

PHYSICAL REVIEW LETTERS | 2001年 / 87卷 / 06期

关键词：

D O I：

10.1103/PhysRevLett.87.067001

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We show that a previously reported discrepancy between simulations of superconducting Josephson junction arrays and the theoretical analysis of Ambegaokar, Halperin, Nelson, and Siggia (AHNS) [Phys. Rev. Lett. 40, 783 (1978)] is rooted in a peculiar finite-size effect under periodic boundary conditions. Our simulation results for the largest array support the power-law I-V curves predicted by AHNS. Analysis of the vortex dynamics reveals two intrinsic length scales set by the applied current, which define three size regimes with distinctive I-V characteristics.

引用

页码：67001 / 1

页数：4

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