Viscoelasticity and surface tension at the defect-induced first-order melting transition of a vortex lattice
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چکیده
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 YBa2Cu3O72d and Bi2Sr2CaCu2O8. 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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تاریخ انتشار 1999