Superfluid density of a pseudogapped superconductor near the superconductor-insulator transition

被引：13
|
作者：
Feigel'man, M. V. [1 ,2 ]
Ioffe, L. B. [1 ,3 ]
机构：
[1] LD Landau Theoret Phys Inst, Chernogolovka 142432, Moscow Region, Russia
[2] Moscow Inst Phys & Technol, Dolgoprudnyi, Moscow Region, Russia
[3] Univ Paris 06, LPTHE, Paris, France
来源：
PHYSICAL REVIEW B | 2015年 / 92卷 / 10期
基金：
俄罗斯科学基金会;
关键词：
QUANTUM PHASE-TRANSITION; ANDERSON LOCALIZATION; DIRTY SUPERCONDUCTORS; FILMS; DIMENSIONS;
D O I：
10.1103/PhysRevB.92.100509
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We analyze the critical behavior of the superfluid density.s in strongly disordered superconductors near the superconductor-insulator transition and compare it with the behavior of the spectral gap Delta for collective excitations. We show that, in contrast to conventional superconductors, the superconductors with preformed pairs display an unusual scaling relation rho(s) proportional to Delta(2) close to the superconductor-insulator transition. This relation has been reported in very recent experiments.
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收藏
页数：4
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