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

10Citations
Citations of this article
11Readers
Mendeley users who have this article in their library.

Abstract

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, and vanishes at low temperatures. We report on a combined experimental and theoretical investigation of thermoelectric effects in superconductor/ferromagnet hybrid structures. We investigate the depencence of thermoelectric currents on the thermal excitation, as well as on the presence of a dc bias voltage across the junction. 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

Cite

CITATION STYLE

APA

Kolenda, S., Machon, P., Beckmann, D., & Belzig, W. (2016). Nonlinear thermoelectric effects in high-field superconductor-ferromagnet tunnel junctions. Beilstein Journal of Nanotechnology, 7(1), 1579–1585. https://doi.org/10.3762/bjnano.7.152

Register to see more suggestions

Mendeley helps you to discover research relevant for your work.

Already have an account?

Save time finding and organizing research with Mendeley

Sign up for free