Experimental evidence for vortex-glass superconductivity in Y-Ba-Cu-O
- 2 October 1989
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 63 (14), 1511-1514
- https://doi.org/10.1103/physrevlett.63.1511
Abstract
We demonstrate experimentally the existence of a continuous phase transition between a normal and a true superconducting phase (with zero linear resistivity) in epitaxial films of Y-Ba-Cu-O in strong magnetic fields fields, H≫. The nonlinear I-V curves show scaling behavior near the transition and the relevant critical exponents are extracted. These exponents are consistent with values expected for freezing into a superconducting vortex-glass phase.
Keywords
This publication has 14 references indexed in Scilit:
- Vortex-glass superconductivity: A possible new phase in bulk high-oxidesPhysical Review Letters, 1989
- Evidence from Mechanical Measurements for Flux-Lattice Melting in Single-Crystal YandPhysical Review Letters, 1988
- Resistive Transition of High-Temperature SuperconductorsPhysical Review Letters, 1988
- Thermally Activated Dissipation inPhysical Review Letters, 1988
- Frequency dependence of the ac susceptibility in a Y-Ba-Cu-O crystal: A reinterpretation ofPhysical Review B, 1988
- Giant Flux Creep and Irreversibility in an Y-Ba-Cu-O Crystal: An Alternative to the Superconducting-Glass ModelPhysical Review Letters, 1988
- Phase transitions in a disordered granular superconductor near percolationPhysical Review B, 1986
- Diamagnetic susceptibility of superconducting clusters: Spin-glass behaviorPhysical Review B, 1985
- Pinning in type II superconductorsJournal of Low Temperature Physics, 1979
- Hard Superconductivity: Theory of the Motion of Abrikosov Flux LinesReviews of Modern Physics, 1964