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Fluctuation induced diamagnetism versus paraconductivity in Y1Ba2Cu3O7−δ single crystals

✍ Scribed by C. Torrón; A. Díaz; J. Jegoudez; J. Maza; A. Pomar; A. Revcolevschi; J.A. Veira; F. Vidal

Publisher
Elsevier Science
Year
1994
Tongue
English
Weight
153 KB
Volume
194-196
Category
Article
ISSN
0921-4526

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✦ Synopsis

The rounding effects above the superconducting transition of the electrical resistivity and of the magnetic susceptibility in low magnetics fields have been measured in the same YBa2Cu307-8 (YBCO) single crystals. When analyzed in terms of independent gaussian fluctuations of the superconducting order parameter in layered materials, an scenario compatible with these experimental results is: Absence of appreciable Maki-Thompson contribution to the paraconductivity, ~ab(O) = (10 + 2) A, ~F.~c(O ) = (1.2 + 0.3) A, de = s = 11.7 A, and conventional 1So wave pairing or one complex component unconventional pairing.

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