{
  "abstract": "Handedness-dependent light-matter interactions require control of local electric-field rotation, but generating controlled surface-normal spin textures is difficult under oblique illumination. Here, we show that oblique s-polarized illumination of a periodic array of parallel slits produces spatially alternating surface-normal electric spin, with its period tunable by the incidence angle. We further show that the spin texture changes qualitatively between substrate- and air-side excitation depending on whether the SPP field interferes with the excitation field. Under substrate-side excitation, the spin distribution follows the conventional spin-flow relation, whereas under air-side excitation, interference between the SPP and excitation fields produces a distinct spatial periodicity and allows the spin extrema to coincide with the field-intensity maxima. A simple interference model reproduces these contrasting spin textures.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.34224",
  "author_total": 1,
  "authors": [
    {
      "name": "Naoki Ichiji"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/cqgzk3m0ye7jh.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.34224",
  "fulltext_url": null,
  "id": "cqgzk3m0ye7jh",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2609.34224",
  "language": null,
  "licence": "LicenseRef-arXiv-nonexclusive-1.0",
  "licence_label": "arXiv licence",
  "licence_source": "article",
  "licence_url": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "physics.optics"
    ]
  ],
  "openalex": null,
  "pdf_url": "https://arxiv.org/pdf/2609.34224",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-16",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/cqgzk3m0ye7jh.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:30:32Z",
      "native_id": "2609.34224",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.34224"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:physics.optics",
      "subfield": "optics-photonics"
    }
  ],
  "title": "Surface-Normal Electric Spin in Obliquely Excited Parallel-Slit SPP Fields",
  "title_text": "Surface-Normal Electric Spin in Obliquely Excited Parallel-Slit SPP Fields",
  "type": "preprint",
  "updated_at": "2026-10-30T12:33:28Z",
  "url": "https://research.draconitic.com/paper/cqgzk3m0ye7jh",
  "venue": "arXiv",
  "versions": []
}