Flux Lattice Melting and the onset of H_c2 fluctuations

Details Flux Lattice Melting and the onset of H_c2 fluctuations Flux Lattice Melting and the onset of H_c2 fluctuations

1999-08-31

arxiv.org/abs/cond-mat/9908475v1

Physics

Condensed Matter

Superconductivity

2 pages, 1 embedded figure, LT22 proceedings, Physica B

Scientific paper

10.1016/S0921-4526(99)02424-2

The flux lattice melting temperature in optimally doped YBCO has been shown to be very close to that of the onset of fluctuations around H_{c2}(T). Here, we present a theoretical argument in support of the idea that this occurs because the increased strength of the fluctuations as a function of magnetic field pushes away the first order flux lattice melting transition. The argument is based on hydrodynamic considerations (the Hansen-Verlet freezing criterion). It is not specific to high-temperature superconductors and can be generalized to other systems.

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