{
  "abstract": "Magnetic energy gaps do not reveal the spatial distribution of magnetic-state-dependent atomic forces. We compare ferromagnetic and antiferromagnetic forces at identical nuclear positions in 64-site substitutional Mn-doped Ge using collinear PBE calculations. For nearest-neighbour Mn pairs, the radial force projection reverses sign between magnetic branches. In the second-neighbour geometry, the shared Ge neighbour has the largest force contrast, about 2.2 times that of equally near Ge sites coordinated to one Mn. Bridge-displacement gap slopes agree with direct force derivatives across four numerical settings. Tightening the electronic threshold by 100-fold preserves magnetic ordering and the leading site, while the force-contrast vector changes by 1.08% despite a nearly unchanged energy gap. The results identify coordination-associated localization of magnetic-branch force contrasts within the frozen model, without establishing relaxed distortions, full numerical convergence or a unique exchange mechanism.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.36740",
  "author_total": 1,
  "authors": [
    {
      "name": "ChienHsu Chen"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/8jpddv98x0vnr.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.36740",
  "fulltext_url": null,
  "id": "8jpddv98x0vnr",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.36740",
  "language": null,
  "licence": "LicenseRef-arXiv-nonexclusive-1.0",
  "licence_label": "arXiv licence",
  "licence_source": "article",
  "licence_url": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "cond-mat.mtrl-sci"
    ],
    [
      "openalex",
      "3107|Magnetic properties of thin films"
    ]
  ],
  "openalex": "W7224115444",
  "pdf_url": "https://arxiv.org/pdf/2610.36740",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-27",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/8jpddv98x0vnr.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:35:50Z",
      "native_id": "2610.36740",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.36740"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:cond-mat.mtrl-sci",
      "subfield": "condensed-matter"
    }
  ],
  "title": "Spatial localization of magnetic-branch force contrasts in substitutional Mn-doped Ge: A first-principles study",
  "title_text": "Spatial localization of magnetic-branch force contrasts in substitutional Mn-doped Ge: A first-principles study",
  "type": "preprint",
  "updated_at": "2026-10-30T12:35:50Z",
  "url": "https://research.draconitic.com/paper/8jpddv98x0vnr",
  "venue": "arXiv",
  "versions": []
}