Breakdown by a magnetic field of the superconducting fluctuations in the normal state: A simple phenomenological explanation
arXiv:cond-mat/0603786 · doi:10.1016/j.jpcs.2005.10.028
Abstract
We first summarize our recent observations, through magnetization measurements in different low-Tc superconductors, of a rather sharp disappearance of the superconducting fluctuations in the normal state when the magnetic field approaches Hc2(0), the upper critical field extrapolated to T=0K. We propose that a crude phenomenological description of the observed effects may be obtained if the quantum limits associated with the uncertainty principle are introduced in the Gaussian-Ginzburg-Landau description of the fluctuation-induced magnetization.
LaTeX, 8 pages, including 2 eps figures. Proceedings of SNS'04, Sitges, Spain