ISSN:
1573-7357
Keywords:
74.25.Ha
;
74.40.+k
;
74.72.Hs
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract We present detailed experimental data of the magnetization, Mab(T,H), of Bi2Sr2CaCu2O8 and YBa2Cu3O7−δ crystals on both sides of the superconducting transition, for magnetic fields, H, applied perpendicularly to the ab (CuO2) planes. The data are analyzed in terms of thermal fluctuations in the weak H limit: In the reversible mixed state below the transition, by taking into account the vortex fluctuations, as first proposed by Bulaevskii, Ledvij and Kogan, which are much more important in the Bi-based compounds. Above the transition, by taking into account the order parameter amplitude fluctuations (OPF), through a generalization to multilayered superconductors of the Schmidt-like approach.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00753848
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