{
  "abstract": "Transition metal ditellurides exhibit structural and electronic properties distinct from their selenide and sulfide counterparts, including the stabilization of multiple charge density wave (CDW) phases. Within the niobium compound family, notable differences in structure are also observed: bulk NbTe2 crystallizes in the 1T phase, distinguishing it from NbSe2 and NbS2, which typically adopt both the 2H and 1T structures. However, in this work, we report the unexpectedly successful synthesis of two-dimensional (2D) islands of the metastable 1H-NbTe2 phase via molecular beam epitaxy on epitaxial graphene supported on Ir(111). The phase is identified by its characteristic hexagonal lattice in combination with distinct spectroscopic features and the presence of mirror twin boundaries. A comprehensive analysis combining scanning tunneling spectroscopy (STS), angle-resolved photoemission spectroscopy (ARPES), and density functional theory (DFT) calculations confirms the metallic character and structural stability of the 1H-NbTe2 phase. Furthermore, low-temperature STS measurements reveal the formation of a 4 × 4 CDW modulation, which is explained based on a phonon instability. These findings motivate the exploration of the complex phase behavior and electronic properties of NbTe2 in the 2D limit.",
  "abstract_shown": true,
  "affiliations": [
    "Instituto Madrileño de Estudios Avanzados en Nanociencia (IMDEA-Nanociencia) , 28049Madrid, Spain.",
    "Institut de Ciència de Materials de Barcelona, ICMAB-CSIC , Campus UAB, Bellaterra08193Spain.",
    "Instituto \"Nicolás Cabrera\", Universidad Autónoma de Madrid, 28049Madrid, Spain.",
    "Departamento de Física de la Materia Condensada., Universidad Autónoma de Madrid, 28049Madrid, Spain.",
    "Condensed Matter Physics Center (IFIMAC), Universidad Autónoma de Madrid (UAM), Campus de Cantoblanco, 28049Madrid, Spain.",
    "Royal Academy of Sciences and Arts of Barcelona, Chemistry Section, La Rambla 115, 08002Barcelona, Spain."
  ],
  "article_type": "research article",
  "arxiv": null,
  "author_total": 12,
  "authors": [
    {
      "affs": [
        0
      ],
      "name": "Noor Ul Ain"
    },
    {
      "affs": [
        0
      ],
      "name": "Alireza Amiri",
      "orcid": "0009-0006-9274-143X"
    },
    {
      "affs": [
        0
      ],
      "name": "Fabian Calleja",
      "orcid": "0000-0001-6007-8641"
    },
    {
      "affs": [
        0
      ],
      "name": "Beatriz Muñiz Cano"
    },
    {
      "affs": [
        0
      ],
      "name": "Archit Dhingra",
      "orcid": "0000-0001-9352-4361"
    },
    {
      "affs": [
        1
      ],
      "name": "Riccardo Rurali",
      "orcid": "0000-0002-4086-4191"
    },
    {
      "affs": [
        0,
        2,
        3,
        4
      ],
      "name": "Amadeo L Vázquez de Parga",
      "orcid": "0000-0003-0551-1603"
    },
    {
      "affs": [
        0,
        2,
        3,
        4
      ],
      "name": "Rodolfo Miranda"
    },
    {
      "affs": [
        0
      ],
      "name": "Miguel A Valbuena",
      "orcid": "0000-0002-0585-5636"
    },
    {
      "affs": [
        1,
        5
      ],
      "name": "Enric Canadell",
      "orcid": "0000-0002-4663-5226"
    },
    {
      "affs": [
        0
      ],
      "name": "Jose Angel Silva-Guillén",
      "orcid": "0000-0002-0483-5334"
    },
    {
      "affs": [
        0,
        2
      ],
      "name": "Manuela Garnica",
      "orcid": "0000-0002-7861-9490"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/6c8zx4bzd8sbq.bib",
  "cited_by": 0,
  "doi": "10.1021/acsnano.6c07014",
  "fulltext_url": "https://europepmc.org/articles/PMC13689919",
  "id": "6c8zx4bzd8sbq",
  "issns": [
    "1936-0851",
    "1936-086X"
  ],
  "landing_url": "https://europepmc.org/article/MED/42899750",
  "language": "eng",
  "licence": "CC-BY-NC-ND",
  "licence_label": "CC BY-NC-ND",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by-nc-nd/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "openalex",
      "2505|2D Materials and Applications"
    ]
  ],
  "openalex": "W7216472304",
  "pdf_url": "https://europepmc.org/articles/PMC13689919?pdf=render",
  "pmcid": "PMC13689919",
  "pmid": "42899750",
  "published": "2026-10-01",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/6c8zx4bzd8sbq.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:19:37Z",
      "native_id": "MED:42899750",
      "source": "europepmc",
      "url": "https://europepmc.org/article/MED/42899750"
    }
  ],
  "subjects": [
    {
      "field": "chemistry",
      "origin": "openalex:2505|2D Materials and Applications",
      "subfield": "materials-polymers"
    }
  ],
  "title": "Unexpected 4 × 4 Charge Density Wave in 1H-NbTe2 Monolayer.",
  "title_text": "Unexpected 4 × 4 Charge Density Wave in 1H-NbTe2 Monolayer.",
  "type": "peer-reviewed",
  "updated_at": "2026-10-30T12:19:37Z",
  "url": "https://research.draconitic.com/paper/6c8zx4bzd8sbq",
  "venue": "ACS nano",
  "versions": []
}