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Role of density of states in the fluctuation conductivity of Bi2Sr2CaCu2O8 and Tl2Ba2CaCu2O8 single crystals

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Title Role of density of states in the fluctuation conductivity of Bi2Sr2CaCu2O8 and Tl2Ba2CaCu2O8 single crystals
 
Creator CHOWDHURY, P
BHATIA, SN
SEN, S
MUTHE, KP
 
Subject magnetic-field
superconductors
resistivity
out-of-plane
tbcco
bscco
superconductivity
 
Description The out-of-plane resistivity rho(c) (T,B) of Bi2Sr2CaCu2O8 and Ti2Ba2CaCu2O8 single crystals has been measured in weak magnetic fields applied perpendicular to the ab-plane. The measurement show a well pronounced peak at a temperature T-m. The external magnetic field shifts T-m towards lower temperatures and increases the magnitude of the peak. We demonstrate that the rho(c) (T,0) is well described by the fluctuation theory, developed by Dorin at al., in the Gaussian approximation over a wide range of temperature, but in the presence of field, fluctuations are better described in Hartree approximation.
 
Publisher INST ELECTRONICS TELECOMMUNICATION ENGINEERS
 
Date 2011-08-03T06:37:01Z
2011-12-26T12:54:04Z
2011-12-27T05:41:25Z
2011-08-03T06:37:01Z
2011-12-26T12:54:04Z
2011-12-27T05:41:25Z
1999
 
Type Article
 
Identifier IETE JOURNAL OF RESEARCH, 45(3-4), 191-194
0377-2063
http://dspace.library.iitb.ac.in/xmlui/handle/10054/8928
http://hdl.handle.net/10054/8928
 
Language en