{
  "abstract": "Charge density wave (CDW) formation in two-dimensional materials is governed by complex competing lattice instabilities that remain incompletely understood. Here, we investigate the structural evolution of monolayer $\\mathrm{1T-VSe}_{2}$ using first-principles electronic and phonon calculations. The pristine phase exhibits several imaginary-frequency phonon modes associated with dominant instability wave vectors $\\mathrm{Q}_{CDW}$, which generate the first-generation CDW phases. Subsequent phonon analyses reveal that several of these intermediate structures remain dynamically unstable and undergo further symmetry-lowering distortions into larger superstructures. Through iterative phonon-driven relaxations, we identify multiple transformation pathways that converge toward the same low-energy $2\\sqrt{3}\\times4$ CDW configuration. Although these pathways originate from distinct intermediate CDW states, they ultimately reach nearly degenerate energetically stable phases, demonstrating that different phonon-driven routes can lead to the same ground-state configuration. The results establish a unified phonon-driven cascade mechanism for hierarchical CDW formation in monolayer $\\mathrm{1T-VSe}_{2}$ and provide a systematic framework for understanding competing ordered phases in low-dimensional quantum materials.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": "Journal reference: Materials Today Physics 68, 102245 (2026)",
  "arxiv": "2605.13458",
  "author_total": 11,
  "authors": [
    {
      "name": "Zheng-Hong Li"
    },
    {
      "name": "Yung-Ting Lee"
    },
    {
      "name": "Yu-Chan Tai"
    },
    {
      "name": "Cheng-Tien Chiang"
    },
    {
      "name": "Chien-Cheng Kuo"
    },
    {
      "name": "Meng-Kai Lin"
    },
    {
      "name": "Chun-Liang Lin"
    },
    {
      "name": "Hung-Chung Hsueh"
    },
    {
      "name": "Ming-Chiang Chung"
    },
    {
      "name": "Po-Tuan Chen"
    },
    {
      "name": "Chi-Cheng Lee"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/arxc9j6chsk9b.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2605.13458",
  "fulltext_url": null,
  "id": "arxc9j6chsk9b",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2605.13458",
  "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/2605.13458",
  "pmcid": null,
  "pmid": null,
  "published": "2026-05-13",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/arxc9j6chsk9b.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:30:52Z",
      "native_id": "2605.13458",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2605.13458"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:cond-mat.mtrl-sci",
      "subfield": "condensed-matter"
    }
  ],
  "title": "Multiple Softening Q-vectors Driving a Cascade of CDW Phases in $\\mathrm{1T-VSe}_{2}$",
  "title_text": "Multiple Softening Q-vectors Driving a Cascade of CDW Phases in 1T−VSe_2",
  "type": "preprint",
  "updated_at": "2026-10-30T12:33:41Z",
  "url": "https://research.draconitic.com/paper/arxc9j6chsk9b",
  "venue": "arXiv",
  "versions": [
    {
      "doi": "10.1016/j.mtphys.2026.102245",
      "pid": null,
      "relation": "published-as",
      "title": null,
      "venue": null
    }
  ]
}