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 00:00:00 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), Vol. 72:24; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

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