{
  "abstract": "Recent experiments indicate that PtBi$_2$ is a Weyl semimetal whose surfaces become topological superconductors with i-wave gap symmetry at low temperature. The bulk hosts 12 Weyl cones while in the superconducting state each of the two surfaces hosts in addition 6 Majorana cones. We study a simplified model in a slab geometry, where the finite thickness gaps out the bulk Weyl cones and leaves the surface Majorana cones as the low-energy degrees of freedom. We identify two competing mechanisms that gap these cones: inter-cone hybridization opens a trivial gap, whereas a Zeeman field opens a nontrivial one. In the nontrivial regime, chiral Majorana edge modes connect the gapped cones. We determine their wavefunction profile and relate it to the momentum-space distribution of the cones. Mapping out the phase diagram, we find both trivial and nontrivial regions in the quasi-two-dimensional limit.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.03867",
  "author_total": 3,
  "authors": [
    {
      "name": "Luca Ketmaier"
    },
    {
      "name": "Jeroen van den Brink"
    },
    {
      "name": "Ion Cosma Fulga"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/3sq8jhnmg6c8t.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.03867",
  "fulltext_url": null,
  "id": "3sq8jhnmg6c8t",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2609.03867",
  "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.mes-hall"
    ],
    [
      "arxiv",
      "cond-mat.supr-con"
    ],
    [
      "openalex",
      "3107|Topological Materials and Phenomena"
    ]
  ],
  "openalex": "W7207540686",
  "pdf_url": "https://arxiv.org/pdf/2609.03867",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-03",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/3sq8jhnmg6c8t.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:18:31Z",
      "native_id": "2609.03867",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.03867"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:cond-mat.mes-hall",
      "subfield": "condensed-matter"
    }
  ],
  "title": "Tunable Chern superconductivity of PtBi$_2$ in slab geometry",
  "title_text": "Tunable Chern superconductivity of PtBi_2 in slab geometry",
  "type": "preprint",
  "updated_at": "2026-10-30T12:18:31Z",
  "url": "https://research.draconitic.com/paper/3sq8jhnmg6c8t",
  "venue": "arXiv",
  "versions": []
}