{
  "abstract": "Achieving robust topological superconductivity with multiple Majorana channels is a key step for scalable topological quantum computing. To this end, we investigate magnetically doped three-dimensional topological insulator heterostructures proximitized by an s-wave superconductor within a fully three-dimensional extended Bernevig-Hughes-Zhang framework that explicitly accounts for vertical confinement. We show that magnetic exchange coupling, orbital mixing, and bulk band inversion cooperate to generate effective equal-spin p-wave pairing channels supporting multiple chiral Majorana modes. The number of Majorana channels is determined by the confined modes in the vertical direction and the high-Chern-number phases of the normal state, which allows us to derive an analytical criterion for the emergence of the multiple-Majorana topological superconducting phases. The chiral Majorana modes remain robust against strong disorder and moderate symmetry-breaking perturbations. We also demonstrate that a superconducting phase difference defining a vertical Josephson junction acts as a tunable parameter that controls the hybridization, minigap, and effective multiplicity of the low energy Majorana channels. Our results establish magnetic three-dimensional topological- insulator heterostructures as a promising platform for engineering multiple chiral Majorana modes.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.01243",
  "author_total": 4,
  "authors": [
    {
      "name": "Alejandro S. Gómez"
    },
    {
      "name": "Rafael A. Molina"
    },
    {
      "name": "Pablo Burset"
    },
    {
      "name": "Yuriko Baba"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/eevw6xqyx862e.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.01243",
  "fulltext_url": null,
  "id": "eevw6xqyx862e",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2609.01243",
  "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"
    ],
    [
      "openalex",
      "3107|Topological Materials and Phenomena"
    ]
  ],
  "openalex": "W7206159071",
  "pdf_url": "https://arxiv.org/pdf/2609.01243",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-01",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/eevw6xqyx862e.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:18:00Z",
      "native_id": "2609.01243",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.01243"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:cond-mat.mes-hall",
      "subfield": "condensed-matter"
    }
  ],
  "title": "Multiple chiral Majorana states in proximitized magnetic topological insulator heterostructures",
  "title_text": "Multiple chiral Majorana states in proximitized magnetic topological insulator heterostructures",
  "type": "preprint",
  "updated_at": "2026-10-30T12:18:00Z",
  "url": "https://research.draconitic.com/paper/eevw6xqyx862e",
  "venue": "arXiv",
  "versions": []
}