Vortex phase diagram of Bi[sub 2]Sr[sub 2]CaCu[sub 2]O[sub 8[minus][ital y]] near the superconducting transition

Journal Article · Mon Jun 13 04:00:00 EDT 1994 · Physical Review Letters; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.72.3867· OSTI ID:7295819

Wan, Y M; Hebboul, S E; Garland, J C ^[1]

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1. Department of Physics, Ohio State University, Columbus, Ohio 43210 (United States)

Six-terminal measurements of the resistive transition of Bi[sub 2]Sr[sub 2]CaCu[sub 2]O[sub 8[minus][ital y]] crystals in a weak external magnetic field [ital H][parallel][ital c] [ital axis] are analyzed to deduce the magnetic [ital H]-[ital T] phase diagram near the superconducting transition. We find evidence for two magnetic field boundaries, namely, a depinning field [ital H][sub [ital p]]([ital T]), and a 3D-2D crossover field [ital H][sub [ital m]]([ital T])[ge][ital H][sub [ital p]]([ital T]), each of which intersects the [ital H]=0 axis at a temperature above the zero-field [ital a]-[ital b] plane transition temperature. We interpret the crossover field [ital H][sub [ital m]]([ital T]) as marking the boundary between 3D vortex lines and interacting 2D vortices.

• DOE Contract Number: FG02-90ER45427
• OSTI ID: 7295819
• Journal Information: Physical Review Letters; (United States), Journal Name: Physical Review Letters; (United States) Vol. 72:24; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

665411* -- Basic Superconductivity Studies-- (1992-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALKALINE EARTH METAL COMPOUNDS
BISMUTH COMPOUNDS
BISMUTH OXIDES
CALCIUM COMPOUNDS
CALCIUM OXIDES
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
DIAGRAMS
HIGH-TC SUPERCONDUCTORS
MAGNETIC FIELDS
MAGNETIC FLUX
OXIDES
OXYGEN COMPOUNDS
PHASE DIAGRAMS
PHYSICAL PROPERTIES
STRONTIUM COMPOUNDS
STRONTIUM OXIDES
SUPERCONDUCTORS
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
TRANSITION TEMPERATURE
VORTICES