{
  "abstract": "The microscopic origin of incommensurability in host-guest crystals remains unresolved. Here we show that the high-pressure antimony host-guest phase Sb-II is a soliton lattice, where localized guest-host misregistries decorate a commensurate 4/3 reference structure. First-principles calculations reveal a corrugated and hysteretic registry landscape, motivating a Frenkel-Kontorova description that accounts for soliton-lattice approximants of the form $(4n+1)/(3n+1)$. Machine-learning-potential calculations of these approximants show an energetically preferred soliton spacing, and their localized misregistry cores are also verified by first-principles relaxations. At finite temperature, the thermally broadened soliton lattice appears as an atomic density wave along the guest chains, consistent with experimental diffraction. This soliton-registry picture provides a microscopic mechanism for host-guest incommensurability in Sb-II.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.40399",
  "author_total": 4,
  "authors": [
    {
      "name": "M. Smirman"
    },
    {
      "name": "K. Sun"
    },
    {
      "name": "H. Sheng"
    },
    {
      "name": "I. I. Mazin"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/3fr4gnftzt1fc.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.40399",
  "fulltext_url": null,
  "id": "3fr4gnftzt1fc",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.40399",
  "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": null,
  "pdf_url": "https://arxiv.org/pdf/2610.40399",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-29",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/3fr4gnftzt1fc.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:36:28Z",
      "native_id": "2610.40399",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.40399"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:cond-mat.mtrl-sci",
      "subfield": "condensed-matter"
    }
  ],
  "title": "Soliton-Lattice Origin of Incommensurability in High-Pressure Antimony",
  "title_text": "Soliton-Lattice Origin of Incommensurability in High-Pressure Antimony",
  "type": "preprint",
  "updated_at": "2026-11-01T12:20:47Z",
  "url": "https://research.draconitic.com/paper/3fr4gnftzt1fc",
  "venue": "arXiv",
  "versions": []
}