VORTEX VARIABLE-RANGE-HOPPING RESISTIVITY IN SUPERCONDUCTING FILMS

被引：146

作者：

FISHER, MPA ^{[1
]}

TOKUYASU, TA ^{[1
]}

YOUNG, AP ^{[1
]}

机构：

[1] CEA SACLAY, SERV PHYS THEOR, F-91191 GIF SUR YVETTE, FRANCE

来源：

PHYSICAL REVIEW LETTERS | 1991年 / 66卷 / 22期

关键词：

D O I：

10.1103/PhysRevLett.66.2931

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We study both classical and quantum vortex creep in disordered thin-film superconductors in an applied magnetic field. Quantum tunneling of vortices leads to a variable-range-hopping resistivity with a non-Arrhenius temperature dependence at low T. Mott's 1/3 law is modified by long-range vortex interactions, and a numerical analysis enables us to estimate a temperature exponent between roughly 2/3 and 4/5. At higher T, a classical hopping regime is expected with a current-density scale for nonlinearities varying (roughly) as T3.

引用

页码：2931 / 2934

页数：4

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