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Title: Fluctuation conductivity effects on thermoelectric power of granular Bi/sub 1. 75/Pb/sub 0. 25/Ca/sub 2/Sr/sub 2/Cu/sub 3/O/sub 10/ superconductor

Journal Article · · Mod. Phys. Letters B; (United States)

The authors report precise measurements of the thermoelectric power (TEP) of granular superconducting Bi/sub 1.75/Pb/sub 0.25/Ca/sub 2/Sr/sub 2/Cu/sub 3/O/sub 10/. The TEP is strictly linear at high temperature. Superconductivity fluctuations set in at about 140 K. From the temperature derivative of the excess TEP (with respect to a straight line at ''high temperature''), the critical behavior is obtained in the mean field regime, and is found identical to that of the temperature derivative of the excess electrical resistivity.

Research Organization:
Institut Montefiore, B. 28, Universite de Liege, Sart Tilman, B-4000 Liege (BE); Athens Univ. (Greece); California Univ., San Diego, La Jolla, CA (USA); Kernforschungszentrum Karlsruhe G.m.b.H. (Germany, F.R.). Inst. fuer Nukleare Festkoerperphysik; Polska Akademia Nauk, Wroclaw (Poland). Inst. Niskich Temperatur i Badan Strukturalnych
OSTI ID:
5763715
Journal Information:
Mod. Phys. Letters B; (United States), Vol. 3:3
Country of Publication:
United States
Language:
English

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