{
  "id": "1708.02807",
  "version": "v1",
  "published": "2017-08-09T12:24:41.000Z",
  "updated": "2017-08-09T12:24:41.000Z",
  "title": "Weak localization of magnons in chiral magnets",
  "authors": [
    "Martin Evers",
    "Cord A. Müller",
    "Ulrich Nowak"
  ],
  "comment": "5 pages, 2 figures",
  "categories": [
    "cond-mat.mes-hall"
  ],
  "abstract": "We report on the impact of the Dzyaloshinskii-Moriya interaction on the coherent backscattering of spin waves in a disordered magnetic material. This interaction breaks the inversion symmetry of the spin-wave dispersion relation, such that $\\omega_\\mathbf{k} = \\omega_{2\\mathbf{K}^\\mathrm{I}-\\mathbf{k}} \\neq \\omega_{-\\mathbf{k}}$, where $\\mathbf{K}^\\mathrm{I}$ is related to the Dzyaloshinskii-Moriya vectors. As a result of numerical investigations we find that the backscattering peak of a wave packet with initial wave vector $\\mathbf{k}_0$ shifts from $-\\mathbf{k}_0$ to $2\\mathbf{K}^\\mathrm{I}-\\mathbf{k}_0$, such that the backscattering wave vector and the initial wave vector are in general no longer antiparallel. The shifted coherence condition is explained by a diagrammatic approach and opens up an avenue to measure sign and magnitude of the Dzyaloshinskii-Moriya interaction in weakly disordered chiral magnets.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2017-08-09T12:24:41.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "weak localization",
      "initial wave vector",
      "dzyaloshinskii-moriya interaction",
      "spin-wave dispersion relation",
      "longer antiparallel"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 5,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}