Theory of the vortex matter transformations in high-Tc superconductor YBCO

Dingping Li*, Baruch Rosenstein

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

31 Scopus citations

Abstract

Flux line lattice in type II superconductors undergoes a transition into a “disordered” phase such as vortex liquid or vortex glass, due to thermal fluctuations and random quenched disorder. We quantitatively describe the competition between the thermal fluctuations and the disorder using the Ginzburg-Landau approach. The following [Formula presented] phase diagram of YBCO emerges. There are just two distinct thermodynamical phases, the homogeneous and the crystalline one, separated by a single first order transition line. The line, however, makes a wiggle near the experimentally claimed critical point at 12 T. The “critical point” is reinterpreted as a (noncritical) Kauzmann point in which the latent heat vanishes and the line is parallel to the [Formula presented] axis. The magnetization, the entropy, and the specific heat discontinuities at melting compare well with experiments.

Original languageEnglish
Article number167004
Pages (from-to)1-4
Number of pages4
JournalPhysical Review Letters
Volume90
Issue number16
DOIs
StatePublished - 25 Apr 2003

Fingerprint Dive into the research topics of 'Theory of the vortex matter transformations in high-T<sub>c</sub> superconductor YBCO'. Together they form a unique fingerprint.

Cite this