A2 Review article, Literature review, Systematic review
Thermal, electric and spin transport in superconductor/ferromagnetic-insulator structures (2019)

Heikkilä, T. T., Silaev, M., Virtanen, P., & Bergeret, F. S. (2019). Thermal, electric and spin transport in superconductor/ferromagnetic-insulator structures. Progress in Surface Science, 94(3), Article 100540. https://doi.org/10.1016/j.progsurf.2019.100540

JYU authors or editors

Publication details

All authors or editors: Heikkilä, Tero T.; Silaev, Mikhail; Virtanen, Pauli; Bergeret, F. Sebastian

Journal or series: Progress in Surface Science

ISSN: 0079-6816

eISSN: 1878-4240

Publication year: 2019

Volume: 94

Issue number: 3

Article number: 100540

Publisher: Elsevier

Publication country: United Kingdom

Publication language: English

DOI: https://doi.org/10.1016/j.progsurf.2019.100540

Publication open access: Not open

Publication channel open access: 

Web address of parallel published publication (pre-print): https://arxiv.org/abs/1902.09297

Abstract

A ferromagnetic insulator (FI) attached to a conventional superconductor (S) changes drastically the properties of the latter. Specifically, the exchange field at the FI/S interface leads to a splitting of the superconducting density of states. If S is a superconducting film, thinner than the superconducting coherence length, the modification of the density of states occurs over the whole sample. The coexistence of the exchange splitting and superconducting correlations in S/FI structures leads to striking transport phenomena that are of interest for applications in thermoelectricity, superconducting spintronics and radiation sensors. Here we review the most recent progress in understanding the transport properties of FI/S structures by presenting a complete theoretical framework based on the quasiclassical kinetic equations. We discuss the coupling between the electronic degrees of freedom, charge, spin and energy, under non-equilibrium conditions and its manifestation in thermoelectricity and spin-dependent transport.

Keywords: superconductors; superconductivity; magnetism; thin films

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Related projects

Ministry reporting: Yes

Reporting Year: 2019

JUFO rating: 1