{
  "abstract": "Topological insulators have been explored extensively for spin-charge interconversion via magnetic interfaces, yet the true response of their spin-charge conversion, particularly in the absence of an external magnetic field, remains to be studied. Here, we report electric field control of spin-charge conversion in the topological insulator Bi₂Te₃ with the antiferromagnetic multiferroic BiFeO₃, using a nonlocal spin transport device. A systematic thickness dependence of the spin transport across the interface between Bi₂Te₃ and BiFeO₃ reveals a signature of topological surface-state-dominated spin transport in the bilayer system. The spin-charge conversion remains robust for thicknesses above 10 nanometers but falls rapidly with reducing thickness and vanishes at 5 nanometers. This is consistent with hybridization-induced emergence of a trivial insulating phase, which is supported by the coherency factor estimated from the magnetoconductance of Bi₂Te₃. These results establish that spin-momentum-locked surface states dominate interfacial spin transport in the decoupled regime. Beyond presenting efficient spin-charge interconversion at an entirely insulating magnetic interface, this work also highlights sputter-deposited Bi₂Te₃ as a high-quality and scalable platform for integrating quantum materials onto the devices. The nonlocal spin transport approach presented here provides a simple and unprecedented direct evidence of spin-charge conversion and opens an efficient and practical pathway toward designing energy-efficient spin-based devices.",
  "abstract_shown": true,
  "affiliations": [
    "Materials Science Division, Lawrence Berkeley National Laboratory, Berkeley, CA, USA.",
    "Department of Materials Science and Engineering, University of California, Berkeley, CA, USA.",
    "Rice Advanced Materials Institute, Rice University, Houston, TX, USA.",
    "Department of Materials Science and NanoEngineering, Rice University, Houston, TX, USA.",
    "Department of Materials Science and Engineering, Cornell University, Ithaca, NY, USA.",
    "Department of Physics, University of California, Berkeley, CA, USA.",
    "Kavli Institute at Cornell for Nanoscale Science, Cornell University, Ithaca, NY, USA.",
    "Leibniz-Institut für Kristallzüchtung, Max-Born-Str. 2, Berlin, Germany."
  ],
  "article_type": "Research Article",
  "arxiv": null,
  "author_total": 17,
  "authors": [
    {
      "affs": [
        0
      ],
      "name": "Yogesh Kumar",
      "orcid": "0000-0002-6076-2168"
    },
    {
      "affs": [
        1
      ],
      "name": "Pushpendra Gupta",
      "orcid": "0000-0002-9449-6742"
    },
    {
      "affs": [
        2,
        3
      ],
      "name": "Xinyan Li",
      "orcid": "0000-0002-3005-0151"
    },
    {
      "affs": [
        2,
        3
      ],
      "name": "Richa Mudgal"
    },
    {
      "affs": [
        1
      ],
      "name": "Ashish Omar"
    },
    {
      "affs": [
        1
      ],
      "name": "Ryan Chen"
    },
    {
      "affs": [
        1
      ],
      "name": "Mito Funatsu",
      "orcid": "0009-0005-1085-3538"
    },
    {
      "affs": [
        4
      ],
      "name": "Maya Ramesh",
      "orcid": "0000-0002-8435-4935"
    },
    {
      "affs": [
        1
      ],
      "name": "Nicholas Reiterer",
      "orcid": "0009-0005-0043-302X"
    },
    {
      "affs": [
        5
      ],
      "name": "Yuanqi Lyu",
      "orcid": "0000-0002-7732-1094"
    },
    {
      "affs": [
        1
      ],
      "name": "Yiping Zeng",
      "orcid": "0009-0009-3644-2234"
    },
    {
      "affs": [
        4,
        6,
        7
      ],
      "name": "Darrell G. Schlom",
      "orcid": "0000-0003-2493-6113"
    },
    {
      "affs": [
        0,
        5
      ],
      "name": "Alessandra Lanzara",
      "orcid": "0000-0002-9519-8974"
    },
    {
      "affs": [
        0,
        5
      ],
      "name": "Robert J. Birgeneau",
      "orcid": "0000-0003-1192-8333"
    },
    {
      "affs": [
        5
      ],
      "name": "James G. Analytis",
      "orcid": "0000-0002-7657-7688"
    },
    {
      "affs": [
        0,
        1,
        5
      ],
      "name": "Ramamoorthy Ramesh",
      "orcid": "0000-0003-0524-1332"
    },
    {
      "affs": [
        1,
        5
      ],
      "name": "Sajid Husain",
      "orcid": "0000-0002-2518-5430"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/77px8esqdee5t.bib",
  "cited_by": 0,
  "doi": "10.1126/sciadv.aeh2170",
  "fulltext_url": "https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13721993/?tool=EBI",
  "id": "77px8esqdee5t",
  "issns": [
    "2375-2548"
  ],
  "landing_url": "https://www.science.org/doi/abs/10.1126/sciadv.aeh2170",
  "language": "eng",
  "licence": "CC-BY-NC",
  "licence_label": "CC BY-NC",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by-nc/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "heading",
      "Applied Physics"
    ],
    [
      "heading",
      "Materials Science"
    ],
    [
      "heading",
      "Physical and Materials Sciences"
    ],
    [
      "heading",
      "Research Article"
    ],
    [
      "heading",
      "SciAdv r-articles"
    ]
  ],
  "openalex": null,
  "pdf_url": "https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13721993/pdf/?tool=EBI",
  "pmcid": "PMC13721993",
  "pmid": "42962032",
  "published": "2026-10-30",
  "publisher": "American Association for the Advancement of Science (AAAS)",
  "ris": "https://research.draconitic.com/paper/77px8esqdee5t.ris",
  "sources": [
    {
      "first_seen": "2026-10-31T00:20:30Z",
      "native_id": "10.1126/sciadv.aeh2170",
      "source": "feed-science",
      "url": "https://www.science.org/doi/abs/10.1126/sciadv.aeh2170"
    },
    {
      "first_seen": "2026-10-31T00:20:32Z",
      "native_id": "10.1126/sciadv.aeh2170",
      "source": "crossref",
      "url": "https://www.science.org/doi/10.1126/sciadv.aeh2170"
    },
    {
      "first_seen": "2026-10-31T12:21:37Z",
      "native_id": "PMC:PMC13721993",
      "source": "europepmc",
      "url": "https://europepmc.org/article/PMC/PMC13721993"
    },
    {
      "first_seen": "2026-11-02T03:21:21Z",
      "native_id": "MED:42962032",
      "source": "europepmc",
      "url": "https://europepmc.org/article/MED/42962032"
    },
    {
      "first_seen": "2026-11-03T12:22:35Z",
      "native_id": "PMC13721993",
      "source": "pmc",
      "url": "https://doi.org/10.1126/sciadv.aeh2170"
    }
  ],
  "subjects": [
    {
      "field": "chemistry",
      "origin": "heading:Materials Science",
      "subfield": "materials-polymers"
    }
  ],
  "title": "Electric field–controlled spin transport in a topological insulator interfaced with a ferroelectric antiferromagnet",
  "title_text": "Electric field–controlled spin transport in a topological insulator interfaced with a ferroelectric antiferromagnet",
  "type": "peer-reviewed",
  "updated_at": "2026-11-03T12:22:35Z",
  "url": "https://research.draconitic.com/paper/77px8esqdee5t",
  "venue": "Science Advances",
  "versions": []
}