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

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3 Citations (Scopus)
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Abstract

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
Volume124
Issue number23
DOIs
Publication statusPublished - 21 Dec 2018

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magnons
ferromagnetic films
phase velocity
magnetostatics
geometry
wave propagation
interactions

Cite this

Golovchanskiy, I. A., Abramov, N. N., Stolyarov, V. S., Ryazanov, V. V., Golubov, A. A., & Ustinov, A. V. (2018). Modified dispersion law for spin waves coupled to a superconductor. Journal of applied physics, 124(23), [233903]. https://doi.org/10.1063/1.5077086
Golovchanskiy, I. A. ; Abramov, N. N. ; Stolyarov, V. S. ; Ryazanov, V. V. ; Golubov, A. A. ; Ustinov, A. V. / Modified dispersion law for spin waves coupled to a superconductor. In: Journal of applied physics. 2018 ; Vol. 124, No. 23.
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Golovchanskiy, IA, Abramov, NN, Stolyarov, VS, Ryazanov, VV, Golubov, AA & Ustinov, AV 2018, 'Modified dispersion law for spin waves coupled to a superconductor', Journal of applied physics, vol. 124, no. 23, 233903. https://doi.org/10.1063/1.5077086

Modified dispersion law for spin waves coupled to a superconductor. / Golovchanskiy, I. A.; Abramov, N. N.; Stolyarov, V. S.; Ryazanov, V. V.; Golubov, A. A.; Ustinov, A. V.

In: Journal of applied physics, Vol. 124, No. 23, 233903, 21.12.2018.

Research output: Contribution to journalArticleAcademicpeer-review

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AU - Abramov, N. N.

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AU - Golubov, A. A.

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AB - 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.

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Golovchanskiy IA, Abramov NN, Stolyarov VS, Ryazanov VV, Golubov AA, Ustinov AV. Modified dispersion law for spin waves coupled to a superconductor. Journal of applied physics. 2018 Dec 21;124(23). 233903. https://doi.org/10.1063/1.5077086