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Chiral Asymmetry of the Spin-Wave Spectra in Ultrathin Magnetic Films
Open accessAbstract
We raise the possibility that the chiral degeneracy of the magnons in ultrathin films can be lifted due to the presence of Dzyaloshinskii-Moriya interactions. By using simple symmetry arguments, we discuss under which conditions such a chiral asymmetry occurs. We then perform relativistic first principles calculations for an Fe monolayer on W(110) and explicitly reveal the asymmetry of the spin-wave spectrum in the case of wave vectors parallel to the (001) direction. Furthermore, we quantitatively interpret our results in terms of a simplified spin model by using calculated Dzyaloshinskii-Moriya vectors. Our theoretical prediction should inspire experiments to explore the asymmetry of spin waves, with a particular emphasis on the possibility to measure the Dzyaloshinskii-Moriya interactions in ultrathin films.
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Citations
Cites
Anisotropic Superexchange Interaction and Weak Ferromagnetism
Moriya, T. (1960) · Physical Review · doi:10.1103/physrev.120.91 · Cited by 7,234
Cited by
Nembach, H. T., Shaw, J. M., Weiler, M., Jué, E., & Silva, T. J. (2015) · Nature Physics · doi:10.1038/nphys3418 · Cited by 398
Metadata
- Authors
- Udvardi, L., & Szunyogh, L.
- Venue
- Physical Review Letters
- Publisher
- American Physical Society (APS)
- Published
- 2009-05-20
- Volume
- 102
- Issue
- 20
- Pages
- 207204-207204
- ISSN
- 0031-9007 (ISSN-L)
- 1079-7114
- OpenAlex
- W1975640585
- Cited by
- 174
- References
- 1
- FWCI
- 2.04
- Type
- journal article
- Language
- en
- Open access
- green
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- Udvardi, L., & Szunyogh, L. (2009). Chiral Asymmetry of the Spin-Wave Spectra in Ultrathin Magnetic Films. Physical Review Letters. https://doi.org/10.1103/physrevlett.102.207204
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