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 language | English |
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Pages (from-to) | 1734-1737 |
Number of pages | 4 |
Journal | Physical Review Letters |
Volume | 80 |
Issue number | 8 |
DOIs | |
State | Published - 23 Feb 1998 |
ASJC Scopus subject areas
- General Physics and Astronomy