WIDEMANN-FRANZ LAW IN BI2SR2CACU2O8

Authors
DU XQ MIHALY L ALLEN PB
Citation
Xq. Du et al., WIDEMANN-FRANZ LAW IN BI2SR2CACU2O8, Physica. B, Condensed matter, 194, 1994, pp. 1507-1508
Citations number
7
Categorie Soggetti
Physics, Condensed Matter
Journal title
Physica. B, Condensed matter → ACNP
ISSN journal
09214526
Volume
194
Year of publication
1994
Part
2
Pages
1507 - 1508
Database
ISI
SICI code
0921-4526(1994)194:<1507:WLIB>2.0.ZU;2-X
Abstract
The measured thermal conductivity of insulating Bi2Sr2yCu2O8 is used t o estimate the phonon part of the thermal conductivity kappa(T) of the superconductor Bi2Sr2CaCu2O8. Subtraction gives an ''experimental'' e lectronic part kappa(ei), and thus a Wiedemann-Franz ratio L = kappa(e l)/sigmaT, close to the Lorenz number L0, with a small temperature dep endence opposite to conventional electron-phonon scattering.