Theory of diamagnetism in granular superconductors

M. V. Feigelman, L. B. Ioffe

Research output: Contribution to journalArticlepeer-review

17 Citations (Scopus)

Abstract

We study a highly disordered network of superconducting granules linked by weak Josephson junctions in a magnetic field and develop a mean field theory for this problem. The diamagnetic response to a slow variations of magnetic field is found to be analogous to the response of a type-II superconductor with extremely strong pinning. We calculate an effective penetration depth λg and critical current jc and find that both λg-1 and jc are nonzero but are strongly suppressed by frustration.

Original languageEnglish
Pages (from-to)3447-3450
Number of pages4
JournalPhysical Review Letters
Volume74
Issue number17
DOIs
Publication statusPublished - 1995
Externally publishedYes

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