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Ferromagnet/Superconductor Hybridization for Magnonic Applications
Author(s) -
Golovchanskiy Igor A.,
Abramov Nikolay N.,
Stolyarov Vasily S.,
Bolginov Vitaly V.,
Ryazanov Valery V.,
Golubov Alexander A.,
Ustinov Alexey V.
Publication year - 2018
Publication title -
advanced functional materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 6.069
H-Index - 322
eISSN - 1616-3028
pISSN - 1616-301X
DOI - 10.1002/adfm.201802375
Subject(s) - permalloy , condensed matter physics , magnonics , superconductivity , materials science , ferromagnetism , spin wave , ferromagnetic resonance , bilayer , dispersion (optics) , magnetic field , magnetization , spin polarization , physics , optics , spin hall effect , quantum mechanics , membrane , biology , genetics , electron
In this work, a new hybridization of superconducting and ferromagnetic orders is demonstrated, promising for magnonics. By measuring the ferromagnetic and spin wave resonance absorption spectra of a magnetostatically coupled permalloy/niobium bilayer at different temperatures, magnetostatic spin wave resonances with unconventional dispersion are observed. The mechanism behind the modified dispersion, confirmed with micromagnetic simulations, implies screening of the alternating magnetostatic stray fields of precessing magnetic moments in the ferromagnetic layer by the superconducting surface in the Meissner state.