Insulating state of granular superconductors in a strong-coupling regime

被引：12

作者：

Beloborodov, I. S.

Fominov, Ya. V.

Lopatin, A. V.

Vinokur, V. M.

机构：

[1] Argonne Natl Lab, Div Sci Mat, Argonne, IL 60439 USA

[2] LD Landau Theoret Phys Inst, Moscow 119334, Russia

来源：

PHYSICAL REVIEW B | 2006年 / 74卷 / 01期

关键词：

D O I：

10.1103/PhysRevB.74.014502

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We analyze the possibility of the formation of a magnetic-field-induced insulating state in a two-dimensional granular superconductor with relatively strong intergranular coupling and show that such a state appears in a model with spatial variations of the single-grain critical magnetic field. This model describes realistic granular samples with a dispersion in grain sizes and explains the mechanism leading to a giant peak in the magnetoresistance.

引用

页数：6

共 30 条

[11] ONSET OF GLOBAL PHASE COHERENCE IN JOSEPHSON-JUNCTION ARRAYS - A DISSIPATIVE PHASE-TRANSITION [J].