{
  "abstract": "Altermagnetism has recently emerged as a distinct magnetic paradigm, yet the exploration of topological spin textures within two-dimensional (2D) altermagnets remains limited. Using first-principles calculations and atomistic spin simulations, we investigate monolayer $\\mathrm{Cr_2X_2}$ and Janus monolayer $\\mathrm{Cr_2XY}$ altermagnets ($\\mathrm{X, Y}=\\mathrm{O, S, Se, Te}$, and $\\mathrm{X \\neq Y}$). Both systems exhibit strong intrinsic exchange frustration arising from competition between nearest-neighbor and further-neighbor exchange interactions. In Janus $\\mathrm{Cr_2XY}$, breaking the out-of-plane mirror symmetry additionally activates a substantial in-plane Dzyaloshinskii-Moriya interaction (DMI), mediated by the strong spin-orbit coupling of heavy chalcogen ligands. The interplay between exchange frustration and DMI gives rise to distinct frustration- and DMI-dominated regimes, while magnetic anisotropy determines the preferred spin orientation, leading to a diverse range of non-collinear states. Systematic phase-space scans and geodesic nudged elastic band (GNEB) calculations reveal two distinct mechanisms governing this interplay: a synergistic effect, in which frustration lowers the critical DMI for the onset of non-collinear states, and a competitive effect, in which frustration favors high-topological-charge states while DMI favors low-charge states. Our results establish a general framework for understanding the interplay between frustration and DMI and guiding the design of topological spin textures in two-dimensional altermagnets.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.16780",
  "author_total": 6,
  "authors": [
    {
      "name": "Zirui Zhang"
    },
    {
      "name": "Shiwei Zhu"
    },
    {
      "name": "Ruixiao Ma"
    },
    {
      "name": "Qiuyao Zhang"
    },
    {
      "name": "Xiaoping Wu"
    },
    {
      "name": "Changsheng Song"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/8wpzf35nnmcma.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.16780",
  "fulltext_url": null,
  "id": "8wpzf35nnmcma",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2609.16780",
  "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.mtrl-sci"
    ],
    [
      "openalex",
      "3107|Magnetic properties of thin films"
    ]
  ],
  "openalex": "W7213431406",
  "pdf_url": "https://arxiv.org/pdf/2609.16780",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-15",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/8wpzf35nnmcma.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:21:41Z",
      "native_id": "2609.16780",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.16780"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:cond-mat.mtrl-sci",
      "subfield": "condensed-matter"
    }
  ],
  "title": "Topological spin textures in 2D altermagnetic chromium chalcogenides: Interplay between magnetic frustration and Dzyaloshinskii-Moriya interaction",
  "title_text": "Topological spin textures in 2D altermagnetic chromium chalcogenides: Interplay between magnetic frustration and Dzyaloshinskii-Moriya interaction",
  "type": "preprint",
  "updated_at": "2026-10-30T12:21:41Z",
  "url": "https://research.draconitic.com/paper/8wpzf35nnmcma",
  "venue": "arXiv",
  "versions": []
}