{
  "abstract": "Capturing ultrafast spin and charge photocurrents on nanoscopic scales is essential for fundamental research in physics and engineering, as well as for future applications, such as novel spin-orbitronic devices. Accessing the fundamental dynamics driven by changes in electronic energy, linear momentum, and angular momentum requires probing at its native spatiotemporal scales: femtoseconds and nanometers. However, experimental approaches achieving this simultaneous resolution remain scarce and instrumentally demanding. Near-field probing offers promising platforms to combine ultrafast and nanometer resolution, typically with high sensitivity to out-of-plane electric fields. However, applying this technique to in-plane ultrafast coupled spin and charge currents is largely unexplored, although being highly application-relevantfrom ultrafast spin transport in 2D materials to spin-to-charge conversion in spintronic terahertz emitters (STEs). Here, we fill this gap by performing spatiotemporal terahertz (THz) emission nanoscopy (TEN) of a photoexcited fiber-coupled STE using a scanning-probe microscope. We uncover a counterintuitive, dipolar spatial evolution of the near-field THz signal, which we show originates from the out-of-plane electric fields emerging from the in-plane spin-driven charge currents. Our findings explain why TEN is sensitive to ultrafast spin-driven in-plane charge currents, paving the way for TEN to become a fully vectorial probe for the spatiotemporal mapping of coupled nanoscale THz charge and spin dynamics.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": null,
  "author_total": 13,
  "authors": [
    {
      "name": "Felix Paries",
      "orcid": "0009-0003-3989-0215"
    },
    {
      "name": "Reza Rouzegar",
      "orcid": "0000-0002-3171-2196"
    },
    {
      "name": "Jiahua Cai"
    },
    {
      "name": "Mingcong Dai"
    },
    {
      "name": "Felix Selz",
      "orcid": "0009-0008-0777-0207"
    },
    {
      "name": "Johanna Koelbel"
    },
    {
      "name": "Geoffrey Lezier"
    },
    {
      "name": "Nicolas Tiercelin"
    },
    {
      "name": "Daniel Molter"
    },
    {
      "name": "Daniel M. Mittleman",
      "orcid": "0000-0003-4277-7419"
    },
    {
      "name": "Georg von Freymann",
      "orcid": "0000-0003-2389-5532"
    },
    {
      "name": "Xiaojun Wu",
      "orcid": "0000-0001-8737-6286"
    },
    {
      "name": "Tom S. Seifert",
      "orcid": "0000-0001-8163-482X"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/9drqsha3m8jpz.bib",
  "cited_by": 0,
  "doi": "10.1038/s41377-026-02468-2",
  "fulltext_url": null,
  "id": "9drqsha3m8jpz",
  "issns": [
    "2095-5545",
    "2047-7538"
  ],
  "landing_url": "https://hal.science/hal-05835284v1",
  "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"
    ],
    [
      "hal",
      "0.spi"
    ],
    [
      "openalex",
      "2208|Terahertz technology and applications"
    ]
  ],
  "openalex": "W7220909302",
  "pdf_url": "https://hal.science/hal-05835284/document",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-08",
  "publisher": "Nature Publishing Group",
  "ris": "https://research.draconitic.com/paper/9drqsha3m8jpz.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:18:01Z",
      "native_id": "hal-05835284",
      "source": "hal",
      "url": "https://hal.science/hal-05835284v1"
    },
    {
      "first_seen": "2026-10-30T12:18:08Z",
      "native_id": "10.1038/s41377-026-02468-2",
      "source": "crossref",
      "url": "https://www.nature.com/articles/s41377-026-02468-2"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "issn:2047-7538",
      "subfield": "optics-photonics"
    }
  ],
  "title": "Spatiotemporal terahertz emission nanoscopy of spintronic photocurrent",
  "title_text": "Spatiotemporal terahertz emission nanoscopy of spintronic photocurrent",
  "type": "peer-reviewed",
  "updated_at": "2026-10-30T12:18:08Z",
  "url": "https://research.draconitic.com/paper/9drqsha3m8jpz",
  "venue": "Light: Science and Applications",
  "versions": []
}