{
  "abstract": "Chiral superconductivity, in which the phase of the superconducting order parameter winds in momentum space, has long been sought for its close link to topological superconductivity. Recent work reported a superconductor in rhombohedral multilayer graphene emerging from a time-reversal symmetry broken normal state, suggesting that it could be a chiral superconductor. However, the possibility of chirality depends on the symmetry and structure of the normal-state Fermi surface, which have not been directly measured. Here we measure quantum oscillations in rhombohedral tetralayer graphene over a broad range of the phase diagram, including the superconducting region. At densities well above the onset of superconductivity, we reproduce previously-reported oscillations consistent with a spin- and valley-polarized quarter metal with a single simply-connected Fermi pocket. As the carrier density is reduced, we find a transition to a complex \"multitone\" state that persists through the superconducting region. This state's spectrum of quantum oscillations is incompatible with a simply-connected quarter metal. The next-simplest candidate normal states suggested by our microscopic modeling (fully-polarized annular, nematic, and three-pocket states) are inconsistent with our measurements, albeit difficult to rule out entirely. The normal state is thus seen to be richer than previously envisaged, reshaping the search for the superconducting mechanism and the possible chirality of the pairing channel.",
  "abstract_shown": true,
  "affiliations": [
    "Department of Physics , Stanford University , Stanford , CA 94305",
    "Department of Physics , Princeton University , Princeton , New Jersey 08544 , USA",
    "Stanford Institute for Materials and Energy Sciences , SLAC National Accelerator Laboratory , Menlo Park , CA 94025",
    "Research Center for Electronic and Optical Materials , National Institute for Materials Science , 1-1 Namiki , Tsukuba 305-0044 , Japan",
    "Research Center for Materials Nanoarchitectonics , National Institute for Materials Science , 1-1 Namiki , Tsukuba 305-0044 , Japan",
    "Department of Physics , University of Texas at Dallas , Richardson , Texas 75080 , USA",
    "Department of Physics , University of California at San Diego , La Jolla , California 92093 , USA"
  ],
  "article_type": null,
  "arxiv": null,
  "author_total": 14,
  "authors": [
    {
      "name": "Sandesh S. Kalantre",
      "orcid": "0000-0002-3086-3769"
    },
    {
      "name": "Ben Hodder Alexander"
    },
    {
      "affs": [
        0
      ],
      "name": "Julian May-Mann",
      "orcid": "0000-0003-3888-2857"
    },
    {
      "affs": [
        1
      ],
      "name": "Jonah Herzog-Arbeitman",
      "orcid": "0000-0003-4993-3381"
    },
    {
      "name": "Marisa Hocking"
    },
    {
      "affs": [
        2
      ],
      "name": "Qingrui Cao",
      "orcid": "0000-0002-7838-1435"
    },
    {
      "affs": [
        3
      ],
      "name": "Kenji Watanabe",
      "orcid": "0000-0003-3701-8119"
    },
    {
      "affs": [
        4
      ],
      "name": "Takashi Taniguchi",
      "orcid": "0000-0002-1467-3105"
    },
    {
      "name": "David Goldhaber‐Gordon",
      "orcid": "0000-0001-8549-0560"
    },
    {
      "name": "Andrew J. Mannix",
      "orcid": "0000-0003-4788-1506"
    },
    {
      "affs": [
        0
      ],
      "name": "Trithep Devakul",
      "orcid": "0000-0002-4129-897X"
    },
    {
      "affs": [
        5
      ],
      "name": "Yves H. Kwan",
      "orcid": "0000-0001-6479-5584"
    },
    {
      "affs": [
        6
      ],
      "name": "Daniel E. Parker",
      "orcid": "0000-0002-5230-5880"
    },
    {
      "name": "Aaron L. Sharpe",
      "orcid": "0000-0002-4260-8546"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/8y5w9eazz1eg8.bib",
  "cited_by": 26,
  "doi": "10.48550/arxiv.2606.05356",
  "fulltext_url": null,
  "id": "8y5w9eazz1eg8",
  "issns": [
    "2331-8422"
  ],
  "landing_url": "https://arxiv.org/abs/2606.05356",
  "language": "en",
  "licence": "CC-BY",
  "licence_label": "CC BY",
  "licence_source": "journal",
  "licence_url": "https://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "openalex",
      "3104|Physics of Superconductivity and Magnetism"
    ]
  ],
  "openalex": "W7163702990",
  "pdf_url": "https://arxiv.org/pdf/2606.05356",
  "pmcid": null,
  "pmid": null,
  "published": "2026-06-03",
  "publisher": "Cornell University",
  "ris": "https://research.draconitic.com/paper/8y5w9eazz1eg8.ris",
  "sources": [
    {
      "first_seen": "2026-11-07T13:20:45Z",
      "native_id": "W7163702990",
      "source": "openalex",
      "url": "https://arxiv.org/abs/2606.05356"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "openalex:3104|Physics of Superconductivity and Magnetism",
      "subfield": "condensed-matter"
    }
  ],
  "title": "Fermiology and the Candidate Chiral Superconductor in Rhombohedral Tetralayer Graphene",
  "title_text": "Fermiology and the Candidate Chiral Superconductor in Rhombohedral Tetralayer Graphene",
  "type": "preprint",
  "updated_at": "2026-11-09T13:21:02Z",
  "url": "https://research.draconitic.com/paper/8y5w9eazz1eg8",
  "venue": "arXiv (Cornell University)",
  "versions": []
}