Characteristics of First-Order Vortex Lattice Melting: Jumps in Entropy and Magnetization
Abstract
We derive expressions for the jumps in entropy and magnetization characterizing the first-order melting transition of a flux line lattice. In our analysis we account for the temperature dependence of the Landau parameters and make use of the proper shape of the melting line as determined by the relative importance of electromagnetic and Josephson interactions. The results agree well with experiments on anisotropic YBaCuO and layered BiSrCaCuO materials and reaffirm the validity of the London model.
Keywords
Cite
@article{arxiv.cond-mat/9705220,
title = {Characteristics of First-Order Vortex Lattice Melting: Jumps in Entropy and Magnetization},
author = {M. J. W. Dodgson and V. B. Geshkenbein and H. Nordborg and G. Blatter},
journal= {arXiv preprint arXiv:cond-mat/9705220},
year = {2009}
}
Comments
4 pages. We have restructured the paper to emphasize that in the London scaling regime (appropriate for YBCO) our results are essentially exact. We have also emphasized that a major controversy over the relevance of the London model to describe VL melting has been settled by this work