{
  "abstract": "Giant optical nonlinearities enable advanced materials control and bridge exotic light-matter phenomena to next-generation photonics. However, materials exhibiting strong higher-order optical nonlinearity beyond the second order are typically rare. Here, we report the discovery of a giant and ultrafast second-harmonic generation (SHG) in self-assembled polar skyrmions under mid-infrared excitations. The transient SHG intensity exhibits a distinctive power dependence originating from higher-order nonlinearity. More generally, we show that large higher-order nonlinearity emerges across diverse domain structures in polar superlattices. Phase-field simulations demonstrate a strong and periodic local permittivity variation within each polar texture at equilibrium, and further confirm the fast polarization oscillation in polar skyrmions with mid-infrared excitations. This intense local permittivity modulation can satisfy epsilon-near-zero conditions, unlocking dramatically enhanced nonlinear optical responses without photonic engineering. Consequently, the self-assembled polar topologies with strong inherent optical nonlinearity could establish a platform for quantum information processing and high-speed optical communications.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": "Journal reference: ACS Nano (2026)",
  "arxiv": "2610.38138",
  "author_total": 16,
  "authors": [
    {
      "name": "Daniel A. Bustamante Lopez"
    },
    {
      "name": "Deepankar Sri Gyan"
    },
    {
      "name": "Xiaojiang Li"
    },
    {
      "name": "Vladimir A. Stoica"
    },
    {
      "name": "Sujit Das"
    },
    {
      "name": "Peter Meisenheimer"
    },
    {
      "name": "Akash Surampalli"
    },
    {
      "name": "Mohit Tanwani"
    },
    {
      "name": "Xianghan Xu"
    },
    {
      "name": "Aiden Ross"
    },
    {
      "name": "Long-Qing Chen"
    },
    {
      "name": "Sang-Wook Cheong"
    },
    {
      "name": "Lane W. Martin"
    },
    {
      "name": "Ramamoorthy Ramesh"
    },
    {
      "name": "Venkatraman Gopalan"
    },
    {
      "name": "Wanzheng Hu"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/4a0xkhgs2gzkw.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.38138",
  "fulltext_url": null,
  "id": "4a0xkhgs2gzkw",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.38138",
  "language": null,
  "licence": "CC-BY-4.0",
  "licence_label": "CC BY 4.0",
  "licence_source": "article",
  "licence_url": "http://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "cond-mat.mtrl-sci"
    ]
  ],
  "openalex": null,
  "pdf_url": "https://arxiv.org/pdf/2610.38138",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-28",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/4a0xkhgs2gzkw.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:36:23Z",
      "native_id": "2610.38138",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.38138"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:cond-mat.mtrl-sci",
      "subfield": "condensed-matter"
    }
  ],
  "title": "Emergent higher-order optical nonlinearity in self-assembled polar supertextures",
  "title_text": "Emergent higher-order optical nonlinearity in self-assembled polar supertextures",
  "type": "preprint",
  "updated_at": "2026-11-01T12:20:44Z",
  "url": "https://research.draconitic.com/paper/4a0xkhgs2gzkw",
  "venue": "arXiv",
  "versions": [
    {
      "doi": "10.1021/acsnano.6c10644",
      "pid": null,
      "relation": "published-as",
      "title": null,
      "venue": null
    }
  ]
}