KOPS - Das Institutionelle Repositorium der Universität Konstanz

Nonlinear thermoelectric effects in high-field superconductor-ferromagnet tunnel junctions

Nonlinear thermoelectric effects in high-field superconductor-ferromagnet tunnel junctions

Zitieren

Dateien zu dieser Ressource

Prüfsumme: MD5:701b2e8b7a9d08f92638ecf02ab882bd

KOLENDA, Stefan, Peter MACHON, Detlef BECKMANN, Wolfgang BELZIG, 2016. Nonlinear thermoelectric effects in high-field superconductor-ferromagnet tunnel junctions. In: Beilstein Journal of Nanotechnology. 7, pp. 1579-1585. eISSN 2190-4286. Available under: doi: 10.3762/bjnano.7.152

@article{Kolenda2016-04-07T09:55:59ZNonli-33554, title={Nonlinear thermoelectric effects in high-field superconductor-ferromagnet tunnel junctions}, year={2016}, doi={10.3762/bjnano.7.152}, volume={7}, journal={Beilstein Journal of Nanotechnology}, pages={1579--1585}, author={Kolenda, Stefan and Machon, Peter and Beckmann, Detlef and Belzig, Wolfgang} }

2016-11-04T12:26:19Z Kolenda, Stefan Kolenda, Stefan 2016-11-04T12:26:19Z 2016-04-07T09:55:59Z Machon, Peter Background: Thermoelectric effects result from the coupling of charge and heat transport and can be used for thermometry, cooling and harvesting of thermal energy. The microscopic origin of thermoelectric effects is a broken electron–hole symmetry, which is usually quite small in metal structures. In addition, thermoelectric effects decrease towards low temperatures, which usually makes them vanishingly small in metal nanostructures in the sub-Kelvin regime.<br /><br />Results: We report on a combined experimental and theoretical investigation of thermoelectric effects in superconductor/ferromagnet hybrid structures. We investigate the dependence of thermoelectric currents on the thermal excitation, as well as on the presence of a dc bias voltage across the junction.<br /><br />Conclusion: Large thermoelectric effects are observed in superconductor/ferromagnet and superconductor/normal-metal hybrid structures. The spin-independent signals observed under finite voltage bias are shown to be reciprocal to the physics of superconductor/normal-metal microrefrigerators. The spin-dependent thermoelectric signals in the linear regime are due to the coupling of spin and heat transport, and can be used to design more efficient refrigerators. Beckmann, Detlef Machon, Peter eng Belzig, Wolfgang Beckmann, Detlef Belzig, Wolfgang Nonlinear thermoelectric effects in high-field superconductor-ferromagnet tunnel junctions

Dateiabrufe seit 04.11.2016 (Informationen über die Zugriffsstatistik)

Kolenda_0-371547.pdf 42

Das Dokument erscheint in:

Versionsgeschichte

Version Dokument Datum Zusammenfassung Publikationsstatus

* Ausgewählte Version

KOPS Suche


Stöbern

Mein Benutzerkonto