{
  "abstract": "The lattice dynamics of disordered systems (amorphous solids, polymers and glasses) are often distinct from crystalline analogues. Examples include the \"two-level systems\" and the Boson peak. Here, we show that even the venerable material amorphous silicon offers new wrinkles: (1) realistic networks studied with DFT-quality interatomic potentials show the existence of harmonic modes exhibiting anomalously large root-mean-square variation in atomic positions, and (2) these dynamics determine the processes of heat transport. We correlate the atomic dynamics with transport using the site-projected thermal conductivity [C. Ugwumadu et. al Phys. Status Solidi B 263, e202500316 (2026)], and conjecture that these observations are relevant to other disordered systems.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.10165",
  "author_total": 6,
  "authors": [
    {
      "name": "A. Gautam"
    },
    {
      "name": "C. Ugwumadu"
    },
    {
      "name": "L. A. M. Rosset"
    },
    {
      "name": "R. M. Tutchton"
    },
    {
      "name": "S. Nakhmanson"
    },
    {
      "name": "D. A. Drabold"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/8vbdnxsvnxj0p.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.10165",
  "fulltext_url": null,
  "id": "8vbdnxsvnxj0p",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.10165",
  "language": null,
  "licence": "CC-BY-NC-ND-4.0",
  "licence_label": "CC BY-NC-ND 4.0",
  "licence_source": "article",
  "licence_url": "http://creativecommons.org/licenses/by-nc-nd/4.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "cond-mat.mtrl-sci"
    ],
    [
      "openalex",
      "2505|Thermal properties of materials"
    ]
  ],
  "openalex": "W7220996882",
  "pdf_url": "https://arxiv.org/pdf/2610.10165",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-07",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/8vbdnxsvnxj0p.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:27:37Z",
      "native_id": "2610.10165",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.10165"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:cond-mat.mtrl-sci",
      "subfield": "condensed-matter"
    }
  ],
  "title": "Lattice dynamics of disordered phases of silicon and spatially resolved computations of thermal conductivity",
  "title_text": "Lattice dynamics of disordered phases of silicon and spatially resolved computations of thermal conductivity",
  "type": "preprint",
  "updated_at": "2026-10-30T12:27:37Z",
  "url": "https://research.draconitic.com/paper/8vbdnxsvnxj0p",
  "venue": "arXiv",
  "versions": []
}