Vortex liquid disorder and the first order melting transition in YBa[sub 2]Cu[sub 3]O[sub 7[minus][delta]]

Journal Article · Mon Feb 14 04:00:00 EST 1994 · Physical Review Letters; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.72.1092· OSTI ID:5226505

Kwok, W K; Fendrich, J; Fleshler, S; Welp, U; Downey, J; Crabtree, G W ^[1]

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1. Materials Science Division and Science and Technology Center for Superconductivity, Argonne National Laboratory, Argonne, Illinois 60439 (United States)

We present transport measurements in high quality untwinned crystals of YBa[sub 2]Cu[sub 3]O[sub 7[minus][delta]] in fields up to 8 T. We find an extremely sharp resistive transition at the first order vortex freezing transition [ital T][sub [ital m]], with width much narrower than the zero field transition width. The resistive transition as a function of magnetic field is equally sharp with freezing occurring within 10 Oe in a field of about 6 T. There is dramatic asymmetric hysteresis in the field dependence of the resistivity related to the unpinned nature of the vortex liquid state.

• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 5226505
• Journal Information: Physical Review Letters; (United States), Journal Name: Physical Review Letters; (United States) Vol. 72:7; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360207* -- Ceramics
Cermets
& Refractories-- Superconducting Properties-- (1992-)
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
HIGH-TC SUPERCONDUCTORS
HYSTERESIS
MELTING
OXIDES
OXYGEN COMPOUNDS
PHASE TRANSFORMATIONS
PHYSICAL PROPERTIES
SUPERCONDUCTORS
TRANSITION ELEMENT COMPOUNDS
VORTICES
YTTRIUM COMPOUNDS
YTTRIUM OXIDES