Magnetization Dynamics in Proximity-Coupled Superconductor-Ferromagnet-Superconductor Multilayers

• DOI: 10.1103/physrevapplied.14.024086
• Publication Date: 2020-08-27T20:37:35Z
• Authors: I.A. Golovchanskiy; N.N. Abramov; V.S. Stolyarov; V.I. Chichkov; M. Silaev; I.V. Shchetinin; A.A. Golubov; V.V. Ryazanov; A.V. Ustinov; M.Yu. Kupriyanov
• Keywords: Magnetization dynamics

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