Pinning-induced transition to disordered vortex phase in layered superconductors

Journal Article · Wed Apr 01 04:00:00 EST 1998 · Physical Review, B: Condensed Matter

DOI:https://doi.org/10.1103/PhysRevB.57.8026· OSTI ID:627553

Koshelev, A E; Vinokur, V M ^[1]

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1. Materials Science Division, Argonne National Laboratory, Argonne, Illinois60439 (United States)

Destruction of the vortex lattice by random point pinning is considered as a mechanism of the {open_quotes}second peak{close_quotes} transition observed experimentally in weakly coupled layered high-temperature superconductors. The transition field separating the topologically ordered quasilattice from the amorphous vortex configuration is strongly influenced by the layered structure and by the nonlocal nature of the vortex tilt energy due to the magnetic interlayer coupling. We found three different regimes of transition depending on the relative strength of the Josephson and magnetic couplings. The regimes can be distinguished by the dependence of the transition field on the superconductor parameters and pinning strength. {copyright} {ital 1998} {ital The American Physical Society}

• OSTI ID: 627553
• Journal Information: Physical Review, B: Condensed Matter, Journal Name: Physical Review, B: Condensed Matter Journal Issue: 13 Vol. 57; ISSN 0163-1829; ISSN PRBMDO
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
HIGH-TC SUPERCONDUCTORS
JOSEPHSON EFFECT
JOSEPHSON JUNCTIONS
LAYERS
MAGNETIC FLUX
VORTEX FLOW
VORTICES