{
  "abstract": "Magnon chiral damping denotes damping that is asymmetric with respect to the magnon wave vector. Such nonreciprocity has been attributed to antisymmetric Dzyaloshinskii-Moriya spin interactions. Here, we provide an alternative theoretical explanation of magnon chiral damping using linear spin-wave theory and antisymmetric Gilbert damping introduced within the Landau-Lifshitz-Gilbert equation of motion. First, employing a minimal model of a single sublattice ferromagnet on a rectangular lattice, we show that the effective magnon damping is independent of the system's energy, including contributions from Dzyaloshinskii-Moriya interactions. Considering scalar nonlocal Gilbert damping, the effective damping parameter $α_{\\rm eff}$ becomes wave-vector dependent. In the long-wavelength limit, $α_{\\rm eff}$ acquires a quadratic dependence on $\\bf{k}$. Furthermore, the antisymmetric component of the Gilbert damping tensor gives rise to asymmetric (nonreciprocal) magnon damping. We find the asymmetry to be linear in $\\bf{k}$ in the long-wavelength limit, consistent with recent experiments. Extending the analysis to a two-sublattice system, we consider cross-sublattice Gilbert damping. In the presence of only scalar Gilbert damping, broken reciprocity in magnon relaxation arises from Dzyaloshinskii-Moriya interactions. In contrast, the cross-sublattice antisymmetric component of the Gilbert damping tensor can generate nonreciprocal magnon damping even if the Dzyaloshinskii-Moriya interaction is parametrically set to zero, providing an alternative mechanism for asymmetric spin-wave relaxation. Notably, the nonreciprocity induced by antisymmetric Gilbert damping is roughly an order of magnitude larger than that arising from Dzyaloshinskii-Moriya interactions.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.03766",
  "author_total": 5,
  "authors": [
    {
      "name": "Darpa Narayan Basu"
    },
    {
      "name": "Subhadip Ghosh"
    },
    {
      "name": "Peter M. Oppeneer"
    },
    {
      "name": "Alexander Mook"
    },
    {
      "name": "Ritwik Mondal"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/3tbrbedrv1txe.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.03766",
  "fulltext_url": null,
  "id": "3tbrbedrv1txe",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.03766",
  "language": null,
  "licence": "CC-BY-4.0",
  "licence_label": "CC BY 4.0",
  "licence_source": "article",
  "licence_url": "http://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "cond-mat.mes-hall"
    ],
    [
      "arxiv",
      "cond-mat.mtrl-sci"
    ],
    [
      "arxiv",
      "cond-mat.other"
    ],
    [
      "openalex",
      "3107|Magnetic properties of thin films"
    ]
  ],
  "openalex": "W7220680756",
  "pdf_url": "https://arxiv.org/pdf/2610.03766",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-01",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/3tbrbedrv1txe.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:27:01Z",
      "native_id": "2610.03766",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.03766"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:cond-mat.mes-hall",
      "subfield": "condensed-matter"
    }
  ],
  "title": "Magnon chiral damping beyond the Dzyaloshinskii-Moriya interaction",
  "title_text": "Magnon chiral damping beyond the Dzyaloshinskii-Moriya interaction",
  "type": "preprint",
  "updated_at": "2026-10-30T12:27:01Z",
  "url": "https://research.draconitic.com/paper/3tbrbedrv1txe",
  "venue": "arXiv",
  "versions": []
}