The influence of the Dzyaloshinskii-Moriya interaction on the spin-wave dispersion in an Fe double layer grown on W(110) is measured for the first time. It is demonstrated that the Dzyaloshinskii-Moriya interaction breaks the degeneracy of spin waves and leads to an asymmetric spin-wave dispersion relation. An extended Heisenberg spin Hamiltonian is employed to obtain the longitudinal component of the Dzyaloshinskii-Moriya vectors from the experimentally measured energy asymmetry. © 2010 The American Physical Society.
CITATION STYLE
Zakeri, K., Zhang, Y., Prokop, J., Chuang, T. H., Sakr, N., Tang, W. X., & Kirschner, J. (2010). Asymmetric spin-wave dispersion on Fe(110): Direct evidence of the dzyaloshinskii-moriya interaction. Physical Review Letters, 104(13). https://doi.org/10.1103/PhysRevLett.104.137203
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