Theory of Upper Critical Field without Energy Quantization
Superconductivity
2007-05-23 v1
Abstract
Conventional theories for determining upper critical fields are inevitably related to the lowest eigenvalues of appropriate equations. In this Letter, a new theory of upper critical fields is designed and justified. Using MgB as modeling prototype, our computations are in excellent agreement with the Ginzburg-Landau theory. The long-standing issue, the upward curvature of the upper critical field, is found to be a manifestation of the crossover of the order parameter. The current theory is an alternative to the traditional technique of energy quantization in determining upper critical fields.
Cite
@article{arxiv.cond-mat/0404043,
title = {Theory of Upper Critical Field without Energy Quantization},
author = {L. Wang and H. S. Lim and C. K. Ong},
journal= {arXiv preprint arXiv:cond-mat/0404043},
year = {2007}
}
Comments
4 pages, 3 figures, Revtex4