S. V. Mironov, A. V. Samokhvalov, A. I. Buzdin, A. S. Mel'nikov, “Electromagnetic proximity effect and the Fulde–Ferrell–Larkin–Ovchinnikov instability in hybrid superconductor–ferromagnet structures (brief review)”, Pis'ma v Zh. Èksper. Teoret. Fiz., 2021, Volume 113, Issue 2,Pages <nobr>102

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Electromagnetic proximity effect and the Fulde–Ferrell–Larkin–Ovchinnikov instability in hybrid superconductor–ferromagnet structures (brief review)

S. V. Mironov^a, A. V. Samokhvalov^a, A. I. Buzdin^ba, A. S. Mel'nikov^a

^a Institute for Physics of Microstructures, Russian Academy of Sciences, Nizhny Novgorod, 603950 Russia
^b University Bordeaux, LOMA UMR-CNRS 5798, Talence Cedex, F-33405 France

Abstract: Recent theoretical ideas concerning the mechanism of the electromagnetic proximity effect in hybrid superconducting structures with ferromagnetic layers, as well as the problem of Fulde–Ferrell–Larkin–Ovchinnikov (FFLO) instability with the modulation of the superconducting order parameter in the plane of the layers forming the structure, are reviewed. It is shown that, near the transition to the FFLO phase, the electromagnetic proximity effect can be enhanced: the corresponding spontaneous current flowing along the superconducting layer of the hybrid superconductor–ferromagnet structure increases drastically when approaching the FFLO transition line on the phase diagram of the structure. The transition to the FFLO phase can thus be observed using experimental techniques involving the diagnostics of the arising spontaneous currents.

Received: 17.11.2020
Revised: 17.11.2020
Accepted: 23.11.2020

DOI: 10.31857/S1234567821020051