Josephson glass and decoupling of flux lattices in layered superconductors

Baruch Horovitz, T. Ruth Goldin

Research output: Contribution to journalArticlepeer-review

35 Scopus citations

Abstract

Phase transitions of a flux lattice in layered superconductors with magnetic field perpendicular to the layers and in the presence of disorder are studied. We find that the Josephson coupling between layers leads to a strongly pinned Josephson glass (JG) phase at low temperatures and fields. The JG phase is bounded by a decoupling transition line and a depinning transition line. These lines cross and form a multicritical point where four phases meet. The phase diagram accounts for unusual data on Bi2Sr2CaCu2O8 such as the “second peak” transition and the recently observed depinning transitions.

Original languageEnglish
Pages (from-to)1734-1737
Number of pages4
JournalPhysical Review Letters
Volume80
Issue number8
DOIs
StatePublished - 23 Feb 1998

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