{
  "abstract": "The spin response of chiral conductors to nonequilibrium electrical fluctuations remains largely unexplored. We develop a low-frequency semiclassical Boltzmann theory coupled to Gauss's law for a chiral metal with spin-orbit coupling of hedgehog type, treating impurity scattering beyond the conventional relaxation-time approximation. We first determine the quadratic response to a local ac current and its frequency dependence, and then show that zero-mean stationary current fluctuation and electric-field fluctuation near boundaries generate finite time-averaged spin polarizations in the two boundary regions of the chiral metal. The polarizations are normal to the boundaries and antiparallel: for one chirality they point inward at both boundaries, and for the other they point outward. Within this model, the dominant contribution arises from the linear Edelstein effect driven by a quadratic effective electric field localized near each boundary. This picture may provide a qualitative explanation for CISS-related spin polarization reported in the absence of an applied bias. More broadly, we expect other externally maintained stochastic drives to induce spin polarization through the same mechanism.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.12645",
  "author_total": 7,
  "authors": [
    {
      "name": "Kosuke Yoshimi"
    },
    {
      "name": "Yusuke Kato"
    },
    {
      "name": "Yuta Suzuki"
    },
    {
      "name": "Shuntaro Sumita"
    },
    {
      "name": "Takuro Sato"
    },
    {
      "name": "Hiroshi M. Yamamoto"
    },
    {
      "name": "Yoshihiko Togawa"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/2jnbtsdbn73mm.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.12645",
  "fulltext_url": null,
  "id": "2jnbtsdbn73mm",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2609.12645",
  "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",
      "cond-mat.mes-hall"
    ],
    [
      "arxiv",
      "cond-mat.mtrl-sci"
    ],
    [
      "openalex",
      "3107|Topological Materials and Phenomena"
    ]
  ],
  "openalex": "W7212911452",
  "pdf_url": "https://arxiv.org/pdf/2609.12645",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-11",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/2jnbtsdbn73mm.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:21:07Z",
      "native_id": "2609.12645",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.12645"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:cond-mat.mes-hall",
      "subfield": "condensed-matter"
    }
  ],
  "title": "Fluctuation-induced antiparallel spin polarization near the boundaries of chiral metals",
  "title_text": "Fluctuation-induced antiparallel spin polarization near the boundaries of chiral metals",
  "type": "preprint",
  "updated_at": "2026-10-30T12:21:07Z",
  "url": "https://research.draconitic.com/paper/2jnbtsdbn73mm",
  "venue": "arXiv",
  "versions": []
}