A. V. Putilov, S. V. Mironov, A. S. Mel'nikov, A. A. Bespalov, “Inverse Faraday effect in superconductors with a finite gap in the excitation spectrum”, Pis'ma v Zh. Èksper. Teoret. Fiz., 2023, Volume 117, Issue 11,Pages <nobr>832

This article is cited in 6 papers

CONDENSED MATTER

Inverse Faraday effect in superconductors with a finite gap in the excitation spectrum

A. V. Putilov^a, S. V. Mironov^a, A. S. Mel'nikov^ab, A. A. Bespalov^a

^a Institute for Physics of Microstructures, Russian Academy of Sciences, Nizhny Novgorod, 603950 Russia
^b Moscow Institute of Physics and Technology (National Research University), Dolgoprudnyi, Moscow region, 141701 Russia

Abstract: The inverse Faraday effect (generation of a time-independent magnetic moment under the action of a circularly polarized electromagnetic wave) in mesoscopic superconducting samples with a finite gap in the excitation spectrum is analytically described. Within the modified time-dependent Ginzburg–Landau theory (Kramer–Watts-Tobin equations) for thin superconducting disks, it is shown that the temperature dependence of the optically induced magnetic moment is nonmonotonic in a wide range of parameters and contains a maximum. This maximum is due to the dephasing between the spatial oscillations of the magnitude and the phase of the order parameter, which arises with a decrease in the temperature and, correspondingly, in the characteristic relaxation time of perturbations in the superconducting condensate.

Received: 30.03.2023
Revised: 17.04.2023
Accepted: 17.04.2023

DOI: 10.31857/S123456782311006X