{
  "abstract": "Abstarct: The integer quantum Hall effect provides one of the most precise and robust manifestations of topological quantum transport. Yet, in semiconductor systems, its development to a fully spin-polarised state typically requires magnetic fields of several tesla and milli-Kelvin temperatures to overcome disorder, Landau-level broadening, and thermal smearing. Here we report a fully spin-polarised ν = 1 quantum Hall state in a two-dimensional (2D) hole gas hosted in a compressively strained germanium quantum well grown on silicon, stabilised at magnetic fields as low as 0.25 − 0.3 T and temperatures up to 1.5 K. This unusually low-field quantisation is enabled by an ultra-dilute carrier regime combined with extremely large Zeeman energy that approaches the cyclotron energy of free carriers over a wide density range, resulting in dominant spin splitting of Landau levels at sub-tesla fields to reach ν= 1 fully spin-polarized quantum limit. Magnetotransport and 2D Landau-fan measurements demonstrate that Landau-level broadening remains smaller than the spin splitting throughout the whole magnetic field range down to 0.25 mT, allowing robust quantisation of the Hall resistance at h/e2. These results establish access to an experimentally unexplored regime of spin-polarised quantum Hall physics in a semiconductor platform and open new opportunities for exploring exchange-driven and correlated many-body states of dilute systems in small magnetic fields.",
  "abstract_shown": true,
  "affiliations": [
    "Physics Department, The University of Warwick, Coventry, UK",
    "National Research Council of Canada, Ottawa, ON Canada"
  ],
  "article_type": "research article",
  "arxiv": null,
  "author_total": 3,
  "authors": [
    {
      "affs": [
        0
      ],
      "name": "M. Myronov"
    },
    {
      "affs": [
        1
      ],
      "name": "W. Jiang"
    },
    {
      "affs": [
        1
      ],
      "name": "S. Studenikin",
      "orcid": "0000-0002-7712-7187"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/294gz3hp39gt7.bib",
  "cited_by": 0,
  "doi": "10.1038/s43246-026-01244-4",
  "fulltext_url": "https://pmc.ncbi.nlm.nih.gov/articles/PMC13696424/",
  "id": "294gz3hp39gt7",
  "issns": [
    "2662-4443"
  ],
  "landing_url": "https://doi.org/10.1038/s43246-026-01244-4",
  "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": [
    [
      "heading",
      "Article"
    ],
    [
      "openalex",
      "3107|Quantum and electron transport phenomena"
    ]
  ],
  "openalex": "W7167081949",
  "pdf_url": "https://www.nature.com/articles/s43246-026-01244-4_reference.pdf",
  "pmcid": "PMC13696424",
  "pmid": "42935906",
  "published": "2026-07-03",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/294gz3hp39gt7.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:17:47Z",
      "native_id": "PMC13696424",
      "source": "pmc",
      "url": "https://doi.org/10.1038/s43246-026-01244-4"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "openalex:3107|Quantum and electron transport phenomena",
      "subfield": "amo"
    }
  ],
  "title": "Fully spin-polarised quantum Hall effect at sub-tesla magnetic fields",
  "title_text": "Fully spin-polarised quantum Hall effect at sub-tesla magnetic fields",
  "type": "peer-reviewed",
  "updated_at": "2026-10-30T12:33:46Z",
  "url": "https://research.draconitic.com/paper/294gz3hp39gt7",
  "venue": "Communications Materials",
  "versions": []
}