{
  "abstract": "Recently, a soliton mechanism for room-temperature superfluorescence in thin perovskite films has been proposed, with a fundamental soliton predicted to remain stable under LO phonon--exciton interactions. At the same time, superlattice architectures offer a route to enhancing superfluorescence in perovskites. Motivated by recent observations of room-temperature superfluorescence in periodic superlattices of quasi-2D metal-halide perovskites, we extend the 2D nonlocal nonlinear Schrödinger equation describing Wannier exciton--LO phonon interactions to superlattice structures, obtaining a 3D nonlocal nonlinear Schrödinger equation. We show that interlayer tunnelling gives rise to breather dynamics corresponding to a stable fundamental soliton in mixed coordinate--momentum space, with the coordinate parallel to the layers and the momentum perpendicular to them. The breather dynamics originate from miniband formation, which induces a momentum-dependent phase modulation of the soliton. In the absence of interlayer tunnelling, the breather dynamics disappear and the soliton becomes stationary. These results establish a direct connection between interlayer tunnelling, miniband formation and soliton dynamics, suggesting that breather behavior can provide a signature of interlayer tunnelling in quasi-2D perovskite superlattices.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.08513",
  "author_total": 3,
  "authors": [
    {
      "name": "A. A. Gladkij"
    },
    {
      "name": "N. N. Rosanov"
    },
    {
      "name": "B. D. Fainberg"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/7a4jmsq8gqxnj.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.08513",
  "fulltext_url": null,
  "id": "7a4jmsq8gqxnj",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2609.08513",
  "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",
      "nlin.PS"
    ],
    [
      "openalex",
      "2208|Perovskite Materials and Applications"
    ]
  ],
  "openalex": "W7212018658",
  "pdf_url": "https://arxiv.org/pdf/2609.08513",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-08",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/7a4jmsq8gqxnj.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:19:52Z",
      "native_id": "2609.08513",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.08513"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:nlin.PS",
      "subfield": "statistical-nonlinear"
    }
  ],
  "title": "Breathers in solitonic room-temperature superlattice-induced superfluorescence in quasi-2D perovskites",
  "title_text": "Breathers in solitonic room-temperature superlattice-induced superfluorescence in quasi-2D perovskites",
  "type": "preprint",
  "updated_at": "2026-10-30T12:19:52Z",
  "url": "https://research.draconitic.com/paper/7a4jmsq8gqxnj",
  "venue": "arXiv",
  "versions": []
}