{
  "abstract": "To comprehend quantum ordered states, such as charge density waves (CDW), in layered transition metal dichalcogenides (TMDCs), it is essential to uncover their underlying normal states. Here, we use time- and angle-resolved extreme ultraviolet photoemission spectroscopy and ab initio electron-phonon calculations to perform excited state band mapping of three prototypical 1T TMDCs, i.e., TiSe$_2$, HfTe$_2$, and ZrTe$_2$, at room temperature. The results reveal the profound impact of strong electron-phonon-induced thermal fluctuations on the normal-phase electronic structure. Specifically, in the moderate electron-phonon coupling regime, as in HfTe$_2$ and ZrTe$_2$, thermal fluctuations only lead to small spectral broadening and band renormalization. In the strongly coupled case, exemplified by TiSe$_2$, we observe soft-phonon-induced, momentum-dependent suppression of spectral weight, i.e., pseudogaps - extending up to 1 eV above the Fermi level. Our work establishes the normal phase of TiSe$_2$ as a phonon-induced pseudogap phase governed by strong CDW fluctuations, thereby uncovering previously missing aspects of the TiSe$_2$ phase diagram, with broader implications for other TMDCs in the strong electron-phonon coupling regime.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": null,
  "author_total": 12,
  "authors": [
    {
      "name": "Sotirios Fragkos"
    },
    {
      "name": "Nina Girotto Erhardt"
    },
    {
      "name": "Evgenia Symeonidou"
    },
    {
      "name": "Hibiki Orio"
    },
    {
      "name": "Dominique Descamps"
    },
    {
      "name": "Stéphane Petit"
    },
    {
      "name": "Polychronis Tsipas"
    },
    {
      "name": "Kai Rossnagel"
    },
    {
      "name": "Jakub Schusser"
    },
    {
      "name": "Athanasios Dimoulas"
    },
    {
      "name": "Samuel Beaulieu"
    },
    {
      "name": "Dino Novko"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/ehmvacdnty13f.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2606.31298",
  "fulltext_url": null,
  "id": "ehmvacdnty13f",
  "issns": [],
  "landing_url": "https://hal.science/hal-05778001v1",
  "language": "en",
  "licence": "CC-BY-4.0",
  "licence_label": "CC BY 4.0",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "hal",
      "0.phys"
    ],
    [
      "openalex",
      "2505|2D Materials and Applications"
    ]
  ],
  "openalex": "W7166857410",
  "pdf_url": "https://hal.science/hal-05778001/document",
  "pmcid": null,
  "pmid": null,
  "published": "2026-11-05",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/ehmvacdnty13f.ris",
  "sources": [
    {
      "first_seen": "2026-11-06T12:20:44Z",
      "native_id": "hal-05778001",
      "source": "hal",
      "url": "https://hal.science/hal-05778001v1"
    }
  ],
  "subjects": [
    {
      "field": "chemistry",
      "origin": "openalex:2505|2D Materials and Applications",
      "subfield": "materials-polymers"
    }
  ],
  "title": "Phonon-induced pseudogap phase in TiSe$_2$",
  "title_text": "Phonon-induced pseudogap phase in TiSe_2",
  "type": "preprint",
  "updated_at": "2026-11-07T12:20:25Z",
  "url": "https://research.draconitic.com/paper/ehmvacdnty13f",
  "venue": "HAL",
  "versions": []
}