Superheating of the Abrikosov flux lattice

Journal Article · Mon Jul 19 04:00:00 EDT 1993 · Physical Review Letters; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.71.436· OSTI ID:6205471

Charalambous, M; Chaussy, J; Lejay, P; Vinokur, V ^[1]

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1. Centre de Recherches sur les Tres basses Temperatures, Centre National de la Recherche Scientifique, BP 166, 38042 Grenoble, CEDEX 9 (France) IBM Thomas J. Watson Research Center, P.O. Box 218, Yorktown Heights, New York 10598 (United States) Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439 (United States)

We report on thermal cycling of an YBa[sub 2]Cu[sub 3]O[sub 7] single crystal close to the melting temperature of the flux lattice for [ital H][vert bar][vert bar][ital ab]. Transport current is along the [ital c] axis and the temperature stability is better than 1 mK. The melting (freezing) transition of the flux lattice occurs at different temperatures ([Delta][ital T]=7 mK) between the cooling and the heating cycle. Hysteresis disappears for slightly increased current density (0.1 A/cm[sup 2]). Comparison of thermal cycles reveals that the Abrikosiv lattice superheats, in contrast with the usual behavior in real crystals where surface premelting is important. This can be due to its imbedding in the real crystal and the consequent surface pinning.

• Research Organization: Argonne National Laboratory (ANL), Argonne, IL
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 6205471
• Journal Information: Physical Review Letters; (United States), Journal Name: Physical Review Letters; (United States) Vol. 71:3; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360207* -- Ceramics
Cermets
& Refractories-- Superconducting Properties-- (1992-)
665411 -- Basic Superconductivity Studies-- (1992-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ABRIKOSOV THEORY
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
CRITICAL CURRENT
CURRENTS
ELECTRIC CURRENTS
FREEZING
HEATING
HIGH-TC SUPERCONDUCTORS
HYSTERESIS
MELTING
OXIDES
OXYGEN COMPOUNDS
PHASE TRANSFORMATIONS
SUPERCONDUCTORS
SUPERHEATING
TEMPERATURE DEPENDENCE
TRANSITION ELEMENT COMPOUNDS
VORTICES
YTTRIUM COMPOUNDS
YTTRIUM OXIDES