Nonreciprocal Dzyaloshinskii-Moriya Magnetoacoustic Waves
Kuess M, Heigl M, Flacke L, Hoerner A, Weiler M, Albrecht M, Wixforth A (2020)
Publication Type: Journal article
Publication year: 2020
Journal
Book Volume: 125
Article Number: 217203
Journal Issue: 21
DOI: 10.1103/PhysRevLett.125.217203
Abstract
We study the interaction of surface acoustic waves with spin waves in ultrathin CoFeB/Pt bilayers. Because of the interfacial Dzyaloshinskii-Moriya interaction (DMI), the spin wave dispersion is nondegenerate for oppositely propagating spin waves in CoFeB/Pt. In combination with the additional nonreciprocity of the magnetoacoustic coupling itself, which is independent of the DMI, highly nonreciprocal acoustic wave transmission through the magnetic film is observed. We systematically characterize the magnetoacoustic wave propagation in a thickness series of CoFeB(d)/Pt samples as a function of magnetic field magnitude and direction, and at frequencies up to 7 GHz. We quantitatively model our results to extract the strength of the DMI and magnetoacoustic driving fields.
Involved external institutions
Germany (DE)How to cite
APA:
Kuess, M., Heigl, M., Flacke, L., Hoerner, A., Weiler, M., Albrecht, M., & Wixforth, A. (2020). Nonreciprocal Dzyaloshinskii-Moriya Magnetoacoustic Waves. Physical Review Letters, 125(21). https://doi.org/10.1103/PhysRevLett.125.217203
MLA:
Kuess, M., et al. "Nonreciprocal Dzyaloshinskii-Moriya Magnetoacoustic Waves." Physical Review Letters 125.21 (2020).
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