[en] The superconductivity fluctuation contribution kappa(B) to the thermal conductivity of a Bi2Sr1.8Ca1.2Cu2O8+y polycrystal is extracted from precise experimental data. The crossover from two-dimensional (2D) to 3D behavior theoretically predicted by Varlamov and Livanov is well marked. The crossover temperature T-VL and the amplitude of the fluctuation contribution lead to realistic values for the interlayer coupling energy J(C) and the transport relaxation time tau near T-c.
Disciplines :
Physics
Author, co-author :
Houssa, M.
Bougrine, Hassan ; Université de Liège - ULiège > CARE "Le Réseau des bibliothèques" > Bibliothèque des Sciences et Techniques
Stassen, S.
Cloots, Rudi ; Université de Liège - ULiège > Département de chimie (sciences) > Chimie inorganique structurale - Doyen de la Faculté des Sciences
Ausloos, Marcel ; Université de Liège - ULiège > Département de physique > Physique statistique appliquée et des matériaux - S.U.P.R.A.S.
Language :
English
Title :
Superconductivity fluctuation effects on the thermal conductivity of Bi2Sr2CaCu2O8
Publication date :
1996
Journal title :
Physical Review. B, Condensed Matter
ISSN :
0163-1829
eISSN :
1095-3795
Publisher :
American Institute of Physics, New York, United States - New York
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