{
  "abstract": "We demonstrate the self-polarization regime of nuclear spins, originally predicted in 1972 by Dyakonov and Perel and achieved here by lattice temperature reduction into the millikelvin range. We first identify a gallium arsenide-based quantum well structure as highly suited by demonstrating a high nuclear spin polarization, corresponding to an Overhauser field of 3.1 tesla, using optical spin pumping at 1.6-kelvin lattice temperature. Here, adiabatic demagnetization leads to a nuclear spin temperature of 6.4 microkelvins, detected by time-resolved Kerr rotation. By measuring polarized photoluminescence and entering the lattice temperature regime below 500 millikelvins, a sharp zero-field feature in the Hanle electron spin depolarization curve evidences the dynamic nuclear self-polarization under unpolarized optical excitation. The self-polarization results in ultralow nuclear spin temperatures, which we estimate to become as low as 200 nanokelvins.",
  "abstract_shown": true,
  "affiliations": [
    "Experimentelle Physik 2, Technische Universität Dortmund, 44227 Dortmund, Germany.",
    "Spin Optics Laboratory, St. Petersburg State University, 198504 St. Petersburg, Russia.",
    "Research Center FEMS, Technische Universität Dortmund, 44227 Dortmund, Germany."
  ],
  "article_type": null,
  "arxiv": null,
  "author_total": 7,
  "authors": [
    {
      "affs": [
        0
      ],
      "name": "Mladen Kotur",
      "orcid": "0000-0002-2569-5051"
    },
    {
      "affs": [
        0
      ],
      "name": "Dennis Kudlacik",
      "orcid": "0000-0001-5473-8383"
    },
    {
      "affs": [
        0
      ],
      "name": "Nataliia E. Kopteva",
      "orcid": "0000-0003-0865-0393"
    },
    {
      "affs": [
        0
      ],
      "name": "Erik Kirstein",
      "orcid": "0000-0002-2549-2115"
    },
    {
      "affs": [
        0
      ],
      "name": "Dmitri R. Yakovlev",
      "orcid": "0000-0001-7349-2745"
    },
    {
      "affs": [
        1
      ],
      "name": "Kirill V. Kavokin",
      "orcid": "0000-0002-0047-5706"
    },
    {
      "affs": [
        0,
        2
      ],
      "name": "Manfred Bayer",
      "orcid": "0000-0002-0893-5949"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/a3j7w5f2q1zw3.bib",
  "cited_by": 0,
  "doi": "10.1126/sciadv.aeh7568",
  "fulltext_url": null,
  "id": "a3j7w5f2q1zw3",
  "issns": [
    "2375-2548"
  ],
  "landing_url": "https://www.science.org/doi/10.1126/sciadv.aeh7568",
  "language": null,
  "licence": "CC-BY",
  "licence_label": "CC BY",
  "licence_source": "journal",
  "licence_url": "https://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "openalex",
      "3107|Quantum and electron transport phenomena"
    ]
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  "openalex": "W7220843195",
  "pdf_url": null,
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-09",
  "publisher": "American Association for the Advancement of Science (AAAS)",
  "ris": "https://research.draconitic.com/paper/a3j7w5f2q1zw3.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:17:41Z",
      "native_id": "10.1126/sciadv.aeh7568",
      "source": "crossref",
      "url": "https://www.science.org/doi/10.1126/sciadv.aeh7568"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "openalex:3107|Quantum and electron transport phenomena",
      "subfield": "amo"
    }
  ],
  "title": "Dynamic self-polarization of the nuclear spins in a GaAs quantum well",
  "title_text": "Dynamic self-polarization of the nuclear spins in a GaAs quantum well",
  "type": "peer-reviewed",
  "updated_at": "2026-10-30T12:17:41Z",
  "url": "https://research.draconitic.com/paper/a3j7w5f2q1zw3",
  "venue": "Science Advances",
  "versions": []
}