Magnetoconductivity measurements in Bi(2223) tape: evidence of critical fluctuations

Authors
Putti, M Cimberle, MR Ferdeghini, C Grasso, G Livanov, D Varlamov, A
Citation
M. Putti et al., Magnetoconductivity measurements in Bi(2223) tape: evidence of critical fluctuations, PHYSICA C, 341, 2000, pp. 1925-1926
Citations number
6
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHYSICA C
ISSN journal
09214534 → ACNP
Volume
341
Year of publication
2000
Part
3
Pages
1925 - 1926
Database
ISI
SICI code
0921-4534(200011)341:<1925:MMIBTE>2.0.ZU;2-F
Abstract
Fluctuation-induced magnetoconductivity is studied on Bi(2223) phase. The G aussian approximation drastically underestimates the negative fluctuation m agnetoconductance in the temperature range of 20 K above the critical tempe rature Taking into account the critical fluctuation contribution on the bas e of self-consistent Hartree approximation it is possible to explain quanti tatively the data in terms of Aslamazov-Larkin contribution only.