Anisotropic resistivity in the mixed state of crystalline YBa[sub 2]Cu[sub 3]O[sub 7+[delta]]

Journal Article · Sat May 01 00:00:00 EDT 1993 · Physical Review, B: Condensed Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.47.11411· OSTI ID:6676133

Blackstead, H A ^[1]

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1. Physics Department, University of Notre Dame, Notre Dame, Indiana 46556 (United States)

An analysis of recent magnetoresistance measurements on high-quality Y-Ba-Cu-O crystals in which the angle [theta] of the field relative to the [ital c] axis was varied is reported. Although the current was perpendicular to the applied field for several of the various orientations, the data show evidence for comparatively small conventional flux flow; and the data are accurately represented by a combination of phase-slip and flux-flow resistivities. We compare anisotropic expressions for phase-slip resistivity using the Ginzburg-Landau (GL) anisotropic-effective-mass formula, and the form given by Tinkham appropriate to thin films. It is shown that the resulting anistrotpic (GL) expression for the field and angular-dependent phase-slip resistivity accurately describes the experimental data with the field parallel and perpendicular to the [ital ab] plane, but only approximates the angular dependence. Use of the Tinkham expression improves the fit, suggesting that Y-Ba-Cu-O behaves as a layered stack of thin film'' superconductors.

• DOE Contract Number: FG02-90ER45427
• OSTI ID: 6676133
• Journal Information: Physical Review, B: Condensed Matter; (United States), Vol. 47:17; ISSN 0163-1829
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
BARIUM OXIDES
MAGNETORESISTANCE
COPPER OXIDES
YTTRIUM OXIDES
GINZBURG-LANDAU THEORY
HIGH-TC SUPERCONDUCTORS
MIXED STATE
ORIENTATION
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
CHALCOGENIDES
COPPER COMPOUNDS
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
SUPERCONDUCTORS
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
360207* - Ceramics
Cermets
& Refractories- Superconducting Properties- (1992-)