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HAIT Journal of Science and Engineering Volume 1, Issue 4, pp. 743-770 © 2004 Holon Academic Institute of Technology | ||||||
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Quantitative theory of stable and metastable phases in the vortex matter of type II superconductors
Dingping Li1,2,*, Baruch Rosenstein2,3, and Pei-Jen Lin2
1Department of Physics, Beijing University, Beijing
100871, China, P.R.C. | 2National Center for Theoretical Sciences and Department of Electrophysics, National Chiao Tung University, Hsinchu, Taiwan, R.O.C. 3Department of Condensed Matter Physics, Weizmann Institute of Science, Rehovot 76100, Israel *Corresponding author: lidp_2000@hotmail.com Received 10 December 2004, accepted 25 March 2005
| Theory of melting of the vortex lattice in type II superconductors in the framework of Ginzburg - Landau approach is presented. Not very far from Hc2(T) the lowest Landau level approximation can be used. To obtain a very accurate description of both the vortex lattice and the vortex liquid different methods are applied. In the solid state the low temperature perturbation theory to the two loop order is used. In the liquid state one utilizes high order high temperature series supplemented by interpolation to a $T=0$ metastable "perfect liquid" state. The melting line location is determined and magnetization and specific heat jumps along it are calculated. The magnetization of liquid is larger than that of solid by 1.8% irrespective of the melting temperature, while the specific heat jump is about 6% and decreases slowly with temperature. Moreover our theory of solid predicted the location of spinodal line was recently confirmed experimentally.
___________________ | Presented at International Workshop Correlated Electrons at High Magnetic Fields. Ein-Gedi/Holon, Israel, 19-23 December 2004 |