Viscoelasticity and Surface Tension at the Defect-Induced First-Order Melting Transition of a Vortex Lattice

Details Viscoelasticity and Surface Tension at the Defect-Induced First-Order Melting Transition of a Vortex Lattice Viscoelasticity and Surface Tension at the Defect-Induced First-Order Melting Transition of a Vortex Lattice

1999-08-27

arxiv.org/abs/cond-mat/9908418v1

Physics

Condensed Matter

Superconductivity

10 pages, Latex, 6 encapsulated postscript figures

Scientific paper

10.1103/PhysRevB.61.1521

We show that thermally activated interstitial and vacancy defects can lead to first order melting of a vortex lattice. We obtain good agreement with experimentally measured melting curve, latent heat, and magnetization jumps for YBCO and BSCCO. The shear modulus of the vortex liquid is frequency dependent and crosses over from zero at low frequencies to a finite value at high frequencies. We also find a small surface tension between the vortex line liquid and the vortex lattice.

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