Finite temperature transport at the superconductor-insulator transition in disordered systems

被引:32
作者
Herbut, IF
机构
[1] Univ British Columbia, Dept Phys & Astron, Vancouver, BC V6T 1Z1, Canada
[2] Dalhousie Univ, Dept Phys, Halifax, NS B3H 3J5, Canada
关键词
D O I
10.1103/PhysRevLett.81.3916
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
I argue that the de limit of the universal crossover function for the conductivity at the superconductor-insulator transition in disordered systems is an analytic function of dimensionality of the system d, with a simple pole at d = 1. By combining the exact result for the crossover function in d = 1 with the recursion relations in d = 1 + epsilon, the leading term in the Laurent series in epsilon is computed for the systems of disordered bosons. The universal de critical conductivity for the system with Coulomb interactions in d = 2 is estimated to be similar to 0.69(2e)(2)/h, in satisfactory agreement with many experiments. [S0031-9007(98)07444-4].
引用
收藏
页码:3916 / 3919
页数:4
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