Physics – Condensed Matter – Superconductivity
Scientific paper
2000-12-22
Physics
Condensed Matter
Superconductivity
9 pages, 5 figures
Scientific paper
10.1103/PhysRevB.64.024514
We calculate various thermodynamic quantities of vortex liquids in a layered superconductor by using the nonperturbative parquet approximation method, which was previously used to study the effect of thermal fluctuations in two-dimensional vortex systems. We find there is a first-order transition between two vortex liquid phases which differ in the magnitude of their correlation lengths. As the coupling between the layers increases,the first-order transition line ends at a critical point. We discuss the possible relation between this critical end-point and the disappearance of the first-order transition which is observed in experiments on high temperature superconductors at low magnetic fields.
Moore Anna M.
Yeo Joonhyun
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