{
  "abstract": "Multicomponent condensates possess internal phase degrees of freedom unavailable to a single-component condensate, yet their components are rarely controllable in solids. Here we realize a graphene trilayer with negligible interlayer tunnelling in which the layer-specific carrier densities are continuously tuned by electrostatic gating. Quantum-capacitance measurements demonstrate that charge-incompressible quantum Hall states at total filling factors 1 and 2 persist across the full range of layer-filling configurations and continuously connect the three bilayer exciton-condensate limits. This persistence provides evidence for a trilayer excitonic state. Static Hartree-Fock and time-dependent Hartree-Fock calculations yield two independent finite phase-stiffness eigenmodes and two linearly dispersing Goldstone modes, respectively, when all three layers are partially filled, whereas only one phase-stiffness eigenmode and one linear Goldstone mode remain when one layer is unfilled. The stiffness eigenmodes rotate continuously between the two adjacent-layer exciton bases as charge is transferred among the layers, revealing electrical control of the condensate-mode composition. Together, the experimental and theoretical results support the identification of a two-component exciton condensate with a continuously tunable internal structure.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2608.28381",
  "author_total": 8,
  "authors": [
    {
      "name": "Bo Zou"
    },
    {
      "name": "A. Okounkova"
    },
    {
      "name": "Shuaiqing Zhang"
    },
    {
      "name": "Jian Liao"
    },
    {
      "name": "J. Pack"
    },
    {
      "name": "K. Watanabe"
    },
    {
      "name": "T. Taniguchi"
    },
    {
      "name": "Yihang Zeng"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/d8fwqzb9cmshm.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2608.28381",
  "fulltext_url": null,
  "id": "d8fwqzb9cmshm",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2608.28381",
  "language": null,
  "licence": "CC-BY-NC-SA-4.0",
  "licence_label": "CC BY-NC-SA 4.0",
  "licence_source": "article",
  "licence_url": "http://creativecommons.org/licenses/by-nc-sa/4.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "cond-mat.mes-hall"
    ],
    [
      "openalex",
      "2505|Graphene research and applications"
    ]
  ],
  "openalex": "W7204844109",
  "pdf_url": "https://arxiv.org/pdf/2608.28381",
  "pmcid": null,
  "pmid": null,
  "published": "2026-08-28",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/d8fwqzb9cmshm.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:17:22Z",
      "native_id": "2608.28381",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2608.28381"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:cond-mat.mes-hall",
      "subfield": "condensed-matter"
    }
  ],
  "title": "Electrically Tunable Two-Component Exciton Condensate in a Coulomb-Coupled Graphene Trilayer",
  "title_text": "Electrically Tunable Two-Component Exciton Condensate in a Coulomb-Coupled Graphene Trilayer",
  "type": "preprint",
  "updated_at": "2026-10-30T12:17:22Z",
  "url": "https://research.draconitic.com/paper/d8fwqzb9cmshm",
  "venue": "arXiv",
  "versions": []
}