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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.


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.

DOI: 10.1088/0953-2048/4/1S/119
Zitationen: 8
Web of Science
Zitationen: 8
Zitationen: 10
Zugehörige Institution(en) am KIT Physikalisches Institut (PHI)
Publikationstyp Zeitschriftenaufsatz
Publikationsdatum 01.01.1991
Sprache Englisch
Identifikator ISSN: 0953-2048, 1361-6668
KITopen-ID: 1000078003
Erschienen in Superconductor science and technology
Verlag Institute of Physics Publishing Ltd (IOP Publishing Ltd)
Band 4
Heft 1S
Seiten S400–S402
Nachgewiesen in Web of Science
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