Thermodynamic observation of first-order vortex-lattice melting transition in Bi2Sr2CaCu2O8

The lattice of magnetic flux lines that can permeate a type II superconductor, such as the high-transition-temperature copper oxide materials, melts from a solid-like state to a liquid-like state at a temperature below the superconducting transition temperature. Contrary to the predictions of mean-f...

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Bibliographic Details
Published in:Nature (London) 1995-06, Vol.375 (6530), p.373-376
Main Authors: Zeldov, E., Majer, D., Konczykowski, M., Geshkenbein, V. B., Vinokur, V. M., Shtrikman, H.
Format: Article
Language:English
Subjects:
Bi-based cuprates
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Cuprates superconductors (high tc and insulating parent compounds)
Engineering Sciences
Exact sciences and technology
High-Tc compounds
Humanities and Social Sciences
Mechanics
multidisciplinary
Physics
Properties of type I and type II superconductors
Science
Science (multidisciplinary)
Superconductivity
Temperature
Thermodynamics
Transition temperatures
Vortex lattices ,flux pinning, flux creep
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Summary:The lattice of magnetic flux lines that can permeate a type II superconductor, such as the high-transition-temperature copper oxide materials, melts from a solid-like state to a liquid-like state at a temperature below the superconducting transition temperature. Contrary to the predictions of mean-field theory, this phase transition in Bi 2 Sr 2 CaCu 2 O 8 is found to be first-order. The vortex liquid discontinuously expands on freezing.
ISSN:0028-0836
1476-4687
DOI:10.1038/375373a0