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Proceedings Paper

Pairing fluctuations in cuprate superconductors: universal properties and trends
Author(s): Toni Schneider
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Paper Abstract

The effects of thermal pairing fluctuations on the phase transition in extreme type II superconductors with pronounced uniaxial anisotropy are examined in zero magnetic field. Approaching Tc from below, there is the crossover from quasi-2D to 3D xy-behavior, which belongs to the universality class of an uncharged superfluid. Because phase fluctuations destroy long-range order in strictly 2D systems the fluctuation dominated regime is rather large. Approaching from above, the same crossover occurs, but in this regime the fluctuations in the magnitude of the pairing field dominate. Using the Gaussian approximation we obtain the relevant correlation lengths and show the importance of fluctuations and anisotropy.

Paper Details

Date Published: 29 June 1994
PDF: 10 pages
Proc. SPIE 2157, Superconducting Superlattices and Multilayers, (29 June 1994); doi: 10.1117/12.179143
Show Author Affiliations
Toni Schneider, IBM Zurich Research Lab. (Switzerland)

Published in SPIE Proceedings Vol. 2157:
Superconducting Superlattices and Multilayers
Ivan Bozovic, Editor(s)

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