{
  "abstract": "Recent transport experiments in rhombohedral multilayer graphene have reported evidence for metallic Wigner crystals (mWCs), characterized by the coexistence of crystalline order and a small density of hole-like carriers. This coexistence raises fundamental questions about the stability of mWCs and the fate of their collective excitations in the presence of gapless fermions. Using self-consistent Hartree-Fock and time-dependent Hartree-Fock calculations, we demonstrate that itinerant carriers profoundly influence both. We find that mWCs with electron pockets are generally unstable to particle-hole fluctuations, while hole-doped mWCs at lower densities remain locally stable. In the stable hole-doped mWC, the longitudinal phonon strongly hybridizes with particle-hole excitations, while the transverse phonon remains relatively well defined. Quasiparticle coupling is strongly mode-dependent and is typically stronger for longitudinal-like excitations than for transverse modes. Our results demonstrate that self-doped carriers not only enable metallicity but also fundamentally reshape the stability, collective dynamics, and quasiparticle interactions of electronic crystals.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2611.02151",
  "author_total": 4,
  "authors": [
    {
      "name": "Sunghoon Kim"
    },
    {
      "name": "Yang-Zhi Chou"
    },
    {
      "name": "Jay D. Sau"
    },
    {
      "name": "Sankar Das Sarma"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/0h0bk37x5889f.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2611.02151",
  "fulltext_url": null,
  "id": "0h0bk37x5889f",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2611.02151",
  "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.str-el"
    ]
  ],
  "openalex": null,
  "pdf_url": "https://arxiv.org/pdf/2611.02151",
  "pmcid": null,
  "pmid": null,
  "published": "2026-11-01",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/0h0bk37x5889f.ris",
  "sources": [
    {
      "first_seen": "2026-11-03T12:20:59Z",
      "native_id": "2611.02151",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2611.02151"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:cond-mat.str-el",
      "subfield": "condensed-matter"
    }
  ],
  "title": "Stability, Collective Modes, and Quasiparticle-Phonon Coupling of Metallic Wigner Crystals in Rhombohedral Graphene",
  "title_text": "Stability, Collective Modes, and Quasiparticle-Phonon Coupling of Metallic Wigner Crystals in Rhombohedral Graphene",
  "type": "preprint",
  "updated_at": "2026-11-05T15:20:18Z",
  "url": "https://research.draconitic.com/paper/0h0bk37x5889f",
  "venue": "arXiv",
  "versions": []
}