{
  "abstract": "Metastable quantum materials often occupy narrow composition windows with local symmetries distinct from competing equilibrium structures. These features open pathways for realizing qualitatively new electronic properties within a similar chemical subspace while at the same time complicating their deterministic synthesis. Here we illustrate a post-growth solid-state dealloying process using epitaxial ternary thin films in the La--Ag--Ge chemical space to realize a diffraction-averaged centrosymmetric superconducting structure. The process converts polar $P6_3mc$-LaAgGe into diffraction-averaged centrosymmetric AlB$_2$-type $P6/mmm$ La-Ag-Ge through net Ag loss during annealing at 800--900 $^\\circ$C. Atomic-resolution electron microscopy reveals local Ag--Ge displacements of both signs relative to the planar configuration, consistent with local inversion-symmetry-breaking distortions. The converted films exhibit composition-dependent superconductivity with critical temperatures below 1 K and in-plane upper critical fields that exceed the weak-coupling Pauli-field estimate by a factor of approximately 6 in the thinnest superconducting films. These results establish epitaxial solid-state dealloying as a route to phase-selective synthesis of metastable phases, offering control over atomic-scale structural configurations and their interplay with emergent electronic properties.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.28249",
  "author_total": 5,
  "authors": [
    {
      "name": "Mizuki Ohno"
    },
    {
      "name": "Reiley Dorrian"
    },
    {
      "name": "Veronica Show"
    },
    {
      "name": "Salva Salmani-Rezaie"
    },
    {
      "name": "Joseph Falson"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/fsdjmb0k9fb35.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.28249",
  "fulltext_url": null,
  "id": "fsdjmb0k9fb35",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2609.28249",
  "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.supr-con"
    ],
    [
      "openalex",
      "3104|Physics of Superconductivity and Magnetism"
    ]
  ],
  "openalex": "W7214149349",
  "pdf_url": "https://arxiv.org/pdf/2609.28249",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-23",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/fsdjmb0k9fb35.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:23:56Z",
      "native_id": "2609.28249",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.28249"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:cond-mat.mtrl-sci",
      "subfield": "condensed-matter"
    }
  ],
  "title": "Solid-State Dealloying Enables Local Symmetry Breaking in Ternary Intermetallic Thin Films",
  "title_text": "Solid-State Dealloying Enables Local Symmetry Breaking in Ternary Intermetallic Thin Films",
  "type": "preprint",
  "updated_at": "2026-10-30T12:23:56Z",
  "url": "https://research.draconitic.com/paper/fsdjmb0k9fb35",
  "venue": "arXiv",
  "versions": []
}