Modified dispersion law for spin waves coupled to a superconductor

I. A. Golovchanskiy, N. N. Abramov, V. S. Stolyarov, V. V. Ryazanov, A. A. Golubov, A. V. Ustinov

Research output: Contribution to journalArticleAcademicpeer-review

19 Citations (Scopus)
171 Downloads (Pure)


In this work, we consider dispersion laws of spin waves that propagate in a ferromagnet/superconductor bilayer, specifically in a ferromagnetic film coupled inductively to a superconductor. The coupling is viewed as an interaction of a spin wave in a ferromagnetic film with its mirrored image generated by the superconductor. We show that, in general, the coupling enhances substantially the phase velocity of magnons in in-plane spin wave geometries. In addition, a heavy nonreciprocity of the dispersion law is observed in the magnetostatic surface spin wave geometry where the phase velocity depends on the direction of the wave propagation.

Original languageEnglish
Article number233903
JournalJournal of Applied Physics
Issue number23
Publication statusPublished - 21 Dec 2018


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