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Proceedings Paper

Effect of pinning and thermal fluctuations on the superconducting transition of YBa2Cu3O7 very thin films
Author(s): Michel Calame; Christian Leemann; L. Baselgia Stahel; Piero Martinoli
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Paper Abstract

The complex ac sheet impedance of c-axis oriented YBa2Cu3O7 thin films was measured as a function of temperature in the frequency range 102Hz - 105 Hz for film thicknesses varying between 24 Angstrom and 1100 Angstrom. We present the measurements on the thinnest films and examine their consistency with the predictions from various models for the superconducting transition, in particular the Kosterlitz- Thouless (KT) theory for the vortex-antivortex unbinding phase transition.

Paper Details

Date Published: 22 December 1998
PDF: 7 pages
Proc. SPIE 3481, Superconducting and Related Oxides: Physics and Nanoengineering III, (22 December 1998); doi: 10.1117/12.335884
Show Author Affiliations
Michel Calame, Univ. de Neuchatel (Switzerland)
Christian Leemann, Univ. de Neuchatel (Switzerland)
L. Baselgia Stahel, Univ. de Neuchatel (Switzerland)
Piero Martinoli, Univ. de Neuchatel (Switzerland)

Published in SPIE Proceedings Vol. 3481:
Superconducting and Related Oxides: Physics and Nanoengineering III
Davor Pavuna; Ivan Bozovic, Editor(s)

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