A1 Journal article (refereed)
Magnetization Dynamics in Proximity-Coupled Superconductor-Ferromagnet-Superconductor Multilayers (2020)


Golovchanskiy, I.A.; Abramov N.N.; Stolyarov, V.S.; Chichkov, V.I.; Silaev, M.; Shchetinin, I.V.; Golubov, A.A.; Ryazanov, V.V.; Ustinov, A.V.; Kupriyanov, M.Yu. (2020). Magnetization Dynamics in Proximity-Coupled Superconductor-Ferromagnet-Superconductor Multilayers. Physical Review Applied, 14 (2), 024086. DOI: 10.1103/PhysRevApplied.14.024086


JYU authors or editors


Publication details

All authors or editors: Golovchanskiy, I.A.; Abramov N.N.; Stolyarov, V.S.; Chichkov, V.I.; Silaev, M.; Shchetinin, I.V.; Golubov, A.A.; Ryazanov, V.V.; Ustinov, A.V.; Kupriyanov, M.Yu.

Journal or series: Physical Review Applied

ISSN: 2331-7019

Publication year: 2020

Volume: 14

Issue number: 2

Article number: 024086

Publisher: American Physical Society (APS)

Publication country: United States

Publication language: English

DOI: http://doi.org/10.1103/PhysRevApplied.14.024086

Open Access: Publication channel is not openly available

Publication is parallel published (JYX): https://jyx.jyu.fi/handle/123456789/71591

Web address of parallel published publication (pre-print): https://arxiv.org/abs/2006.00348


Abstract

In this work, magnetization dynamics is studied in superconductor-ferromagnet-superconductor three-layered films in a wide frequency, field, and temperature ranges using the broad-band ferromagnetic resonance measurement technique. It is shown that in the presence of both superconducting layers and of superconducting proximity at both superconductor-ferromagnet interfaces a massive shift of the ferromagnetic resonance to higher frequencies emerges. The phenomenon is robust and essentially long-range: it has been observed for a set of samples with the thickness of ferromagnetic layer in the range from tens up to hundreds of nanometers. The resonance frequency shift is characterized by proximity-induced magnetic anisotropies: by the positive in-plane uniaxial anisotropy and by the drop of magnetization. The shift and the corresponding uniaxial anisotropy grow with the thickness of the ferromagnetic layer. For instance, the anisotropy reaches 0.27 T in experiment for a sample with a 350-nm-thick ferromagnetic layer, and about 0.4 T in predictions, which makes it a ferromagnetic film structure with the highest anisotropy and the highest natural resonance frequency ever reported. Various scenarios for the superconductivity-induced magnetic anisotropy are discussed. As a result, the origin of the phenomenon remains unclear. Application of the proximity-induced anisotropies in superconducting magnonics is proposed as a way for manipulations with a spin-wave spectrum.


Keywords: thin films; superconductors; superconductivity; magnetic properties

Free keywords: magnetization dynamics; magnons; proximity effect; spin waves; ferromagnets; multilayer thin films; type-II superconductors


Contributing organizations


Ministry reporting: Yes

Preliminary JUFO rating: 2


Last updated on 2020-02-09 at 08:15