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arXiv · 1701.05854

Asymmetric Spin-wave Dispersion on Fe(110): Direct Evidence of Dzyaloshinskii--Moriya Interaction

Kh. Zakeri·Y. Zhang·J. Prokop·T. -H. Chuang·N. Sakr·W. X. Tang·J. Kirschner
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Abstract

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.

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Kh. Zakeri, Y. Zhang, J. Prokop, T. -H. Chuang, N. Sakr, W. X. Tang, J. Kirschner. 2017-01-20. Asymmetric Spin-wave Dispersion on Fe(110): Direct Evidence of Dzyaloshinskii--Moriya Interaction. https://doi.org/10.1103/physrevlett.104.137203

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