Asymmetric spin-wave dispersion on Fe(110): Direct evidence of the dzyaloshinskii-moriya interaction

Kh Zakeri, Yu Zhang, J Prokop, T-H Chuang, N Sakr, Wen-Xin Tang, J Kirschner

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    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. A? 2010 The American Physical Society.
    Original languageEnglish
    Pages (from-to)137203-1 - 137203-4
    Number of pages1
    JournalPhysical Review Letters
    Issue number13
    Publication statusPublished - 2010

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