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American Physical Society, Physical review B, 18(88)

DOI: 10.1103/physrevb.88.184404

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Spin-Wave Propagation in the Presence of Interfacial Dzyaloshinskii-Moriya Interaction

Journal article published in 2013 by Jung-Hwan Moon, Soo-Man Seo, Kyung-Jin Lee, Kyung-Whan Kim ORCID, Jisu Ryu, Hyun-Woo Lee, R. D. McMichael ORCID, M. D. Stiles
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This paper is available in a repository.

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Abstract

In ferromagnetic thin films, broken inversion symmetry and spin-orbit coupling give rise to interfacial Dzyaloshinskii-Moriya interactions. Analytic expressions for spin-wave properties show that the interfacial Dzyaloshinskii-Moriya interaction leads to non-reciprocal spin-wave propagation, i.e. different properties for spin waves propagating in opposite directions. In favorable situations, it can increase the spin-wave attenuation length. Comparing measured spin wave properties in ferromagnet$|$normal metal bilayers and other artificial layered structures with these calculations can provide a useful characterization of the interfacial Dzyaloshinskii-Moriya interactions. ; Comment: 7 pages, 4 figures