Pinned Vortex Liquid above the Critical Point of the First-Order Melting Transition: A Consequence of Pointlike Disorder
- 2 February 1998
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 80 (5), 1070-1073
- https://doi.org/10.1103/physrevlett.80.1070
Abstract
We report on a strongly pinned entangled vortex liquid above the critical point (CP) of the first-order melting transition in untwinned single crystals. Above CP, the axis dissipation is finite where the in-plane dissipation is undetectable, implying large in-plane vortex pinning in the presence of vortex cutting and recombination. We demonstrate that the behavior above CP is governed by pointlike disorder. The same behavior is reproduced in twinned samples with proton-induced point defects.
Keywords
This publication has 26 references indexed in Scilit:
- Stability of Elastic Glass Phases in Random FieldMagnets and Vortex Lattices in Type-II SuperconductorsPhysical Review Letters, 1997
- Calorimetric measurement of the latent heat of vortex-lattice melting in untwinned YBa2Cu3O7–δNature, 1996
- Thermodynamic Evidence for a Flux Line Lattice Melting Transition inPhysical Review Letters, 1996
- Elastic theory of flux lattices in the presence of weak disorderPhysical Review B, 1995
- Thermodynamic observation of first-order vortex-lattice melting transition in Bi2Sr2CaCu2O8Nature, 1995
- First order phase transition at the irreversibility line ofPhysical Review Letters, 1994
- Direct observation of magnetic flux lattice melting and decomposition in the high-Tc superconductor Bi2.15Sr1.95CaCu2O8+xNature, 1993
- Experimental evidence for a multicritical point in the magnetic phase diagram for the mixed state of clean untwinnedPhysical Review Letters, 1993
- Vortex lattice melting in untwinned and twinned single crystals ofPhysical Review Letters, 1992
- Experimental evidence for a first-order vortex-lattice-melting transition in untwinned, single crystalPhysical Review Letters, 1992