Regensburg 2016 – wissenschaftliches Programm

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TT: Fachverband Tiefe Temperaturen

TT 19: Superconductivity: Poster Session

TT 19.33: Poster

Montag, 7. März 2016, 15:00–18:00, Poster D

Spin-dependent thermoelectric effects in superconductor-ferromagnet tunnel junctions — Stefan Kolenda¹, Christoph Sürgers², and •Detlef Beckmann¹ — ¹Institut für Nanotechnologie, Karlsruher Institut für Technologie — ²Physikalisches Institut, Karlsruher Institut für Technologie

Recently, large thermoelectric effects were predicted to occur in superconductor-ferromagnet tunnel junctions with a spin-splitting of the density of states [1]. We have reported on the observation of these effects in samples where the spin splitting was induced by an applied magnetic field [2]. Here, we show results on samples where the spin splitting is enhanced by exchange coupling to the ferromagnetic insulator europium sulfide.
Machon et al., PRL 110, 047002 (2013);

Ozaeta et al., PRL 112, 057001 (2014).
Kolenda et al., arXiv:1509.05568.