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Seebeck effect of weak links in a high-Tc superconductor

Ustinov, A V; Hartmann, M; Huebener, R P; Logvenov, G Yu; Ryazanov, V V

Abstract:
The authors have observed experimentally the analog of the superfluid helium fountain effect in a polycrystalline YBaCuO film. In a superconductor a temperature gradient induces the counterflow of superconducting electrons and quasiparticles. The supercurrent creates a phase difference at the intra- and intergrain weak links. In the presence of a temperature gradient parallel to an electric current they have detected an asymmetry of the current-voltage characteristic. Reversing the direction of the temperature gradient also reverses the sign of the current asymmetry. They estimate the thermoelectric coefficient for the quasiparticles in the YBaCuO sample.



Originalveröffentlichung
DOI: 10.1088/0953-2048/4/1S/119
Scopus
Zitationen: 8
Web of Science
Zitationen: 8
Zugehörige Institution(en) am KIT Physikalisches Institut (PHI)
Publikationstyp Zeitschriftenaufsatz
Jahr 1991
Sprache Englisch
Identifikator ISSN: 0953-2048, 1361-6668
KITopen-ID: 1000078003
Erschienen in Superconductor science and technology
Band 4
Heft 1S
Seiten S400–S402
Nachgewiesen in Web of Science
Scopus
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