{
  "abstract": "The transition metal oxychalcogenide La$_2$O$_2$Fe$_2$OSe$_2$ exhibits a non-collinear spin-ice like antiferromagnetic ordering below $T_N \\approx $ 90 K due to complex magnetic exchange interactions and axial single-ion anisotropy of Fe$^{2+}$ spins. The magnetic structure was deduced/determined from combined $^{57}$Fe Mössbauer spectroscopy and $^{139}$La-NMR on polycrystalline specimen. In this work, we present zero-field $^{139}$La-NQR investigations on polycrystalline La$_2$O$_2$Fe$_2$OSe$_2$ in a broad frequency and temperature range between 2.8 - 20 MHz and 4.2 - 100 K. The measured resonances at $ν_Q$, $2 \\, ν_Q$, and $3 \\, ν_Q$ are fully consistent with the previous NMR studies and also with the magnetic structure. A substantial modification of the electric field gradient at the La-position below $T_N$ is inconsistent with the current investigations.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.29635",
  "author_total": 10,
  "authors": [
    {
      "name": "Tillmann Weinhold"
    },
    {
      "name": "Jerin Abraham George"
    },
    {
      "name": "Cornelius Herrmann"
    },
    {
      "name": "Domenic Nowak"
    },
    {
      "name": "Rajib Sarkar"
    },
    {
      "name": "Felix Seewald"
    },
    {
      "name": "Rowena Wachtel"
    },
    {
      "name": "Sabine Wurmehl"
    },
    {
      "name": "Bernd Büchner"
    },
    {
      "name": "Hans-Henning Klauss"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/fjhy23v8b0ggd.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.29635",
  "fulltext_url": null,
  "id": "fjhy23v8b0ggd",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.29635",
  "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"
    ],
    [
      "arxiv",
      "cond-mat.str-el"
    ],
    [
      "openalex",
      "3104|Advanced Condensed Matter Physics"
    ]
  ],
  "openalex": "W7223224901",
  "pdf_url": "https://arxiv.org/pdf/2610.29635",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-21",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/fjhy23v8b0ggd.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:34:19Z",
      "native_id": "2610.29635",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.29635"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:cond-mat.mtrl-sci",
      "subfield": "condensed-matter"
    }
  ],
  "title": "Confirmation of complex non-collinear Fe(II) spin ordering in the iron oxychalcogenide La$_2$O$_2$Fe$_2$OSe$_2$ by broad range $^{139}$La-NQR",
  "title_text": "Confirmation of complex non-collinear Fe(II) spin ordering in the iron oxychalcogenide La_2O_2Fe_2OSe_2 by broad range ^139La-NQR",
  "type": "preprint",
  "updated_at": "2026-10-30T12:34:19Z",
  "url": "https://research.draconitic.com/paper/fjhy23v8b0ggd",
  "venue": "arXiv",
  "versions": []
}