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

  • Zakeri K
  • Zhang Y
  • Prokop J
 et al. 
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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.

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  • Kh Zakeri

  • Y. Zhang

  • J. Prokop

  • T. H. Chuang

  • N. Sakr

  • W. X. Tang

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