Breakdown by a magnetic field of the superconducting fluctuations in the normal state: A simple phenomenological explanation

Details Breakdown by a magnetic field of the superconducting fluctuations in the normal state: A simple phenomenological explanation Breakdown by a magnetic field of the superconducting fluctuations in the normal state: A simple phenomenological explanation

2006-03-29

arxiv.org/abs/cond-mat/0603786v1

J. Phys. Chem. Solids 67, 479-481 (2006)

Physics

Condensed Matter

Superconductivity

LaTeX, 8 pages, including 2 eps figures. Proceedings of SNS'04, Sitges, Spain

Scientific paper

10.1016/j.jpcs.2005.10.028

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.

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