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
收藏
页码：2931 / 2934
页数：4
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