Transport Properties of YBaCuO and BiSrCaCuO Thin Films in the Thermodynamic Fluctuation Range

Autor(en)

W. Lang, G. Heine, C. Sekirnjak, P. Schwab, X.Z. Wang, D. Bauerle, W. Kula, R. Sobolewski

Abstrakt

Thin films of YBaCuO have been fabricated by pulsed-laser deposition in oxygen atmosphere on MgO substrates. Films of the 2223-phase of BiSrCaCuO, stabilized by Pb-addition in the ceramic targets, were prepared by DC-magnetron sputtering. The effect of thermodynamic fluctuations of the superconducting order parameter on the normal state transport properties was investigated by measurements of the electrical resistivity, the magnetoresistance and the Hall effect. Analyzing the results in terms of Aslamazov-Larkin and Maki-Thompson theories and their extensions for 2-dimensional, layered superconductors, we obtain a consistent set of parameters from which the c-axis coherence lengths xi(c)(0) = 1.5 angstrom in YBaCuO and xi(c)(0) = 1.7 angstrom in 2223-(Bi,Pb)SrCaCuO are deduced. A significant contribution from the Maki-Thompson process was found in YBaCuO, but no such effects in the (Bi,Pb)SrCaCuO films.

Organisation(en)

Elektronische Materialeigenschaften

Externe Organisation(en)

Universität Wien, Johannes Kepler Universität Linz, University of Rochester

Journal

Physica C: Superconductivity and its Applications

Band

209

Seiten

71-74

Anzahl der Seiten

4

ISSN

0921-4534

DOI

https://doi.org/10.1016/0921-4534(93)90873-O

Publikationsdatum

1993

Peer-reviewed

Ja

ÖFOS 2012

103018 Materialphysik

Schlagwörter

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/1b2def20-e50e-481d-811e-9cbff8c36d28