STATISTICAL REPRESENTATION OF THE EXCESS CONDUCTIVITY IN A BI-SR-CA-CU-O SUPERCONDUCTOR

Authors
CIURCHEA D POP AV COZAR O ILONCA G GERU VI POP V KONOPKO LA
Citation
D. Ciurchea et al., STATISTICAL REPRESENTATION OF THE EXCESS CONDUCTIVITY IN A BI-SR-CA-CU-O SUPERCONDUCTOR, Superconductor science and technology, 9(2), 1996, pp. 88-92
Citations number
28
Categorie Soggetti
Physics, Applied","Physics, Condensed Matter
Journal title
Superconductor science and technology → ACNP
ISSN journal
09532048
Volume
9
Issue
2
Year of publication
1996
Pages
88 - 92
Database
ISI
SICI code
0953-2048(1996)9:2<88:SROTEC>2.0.ZU;2-B
Abstract
The onset of superconductivity may be described by the product of a Ga ussian with a Student distribution. The excess conductivity properties of many specimens are numerically fitted and prove the accuracy of th is model. The number of degrees of freedom yielded by the Student dist ribution corresponds to the number of independent variants of percolat ion of the Cooper pairs above T-cmf. This number depends linearly on t he type of 3d substituents of Cu (Zn, Fe, Ni).