{
  "id": "2501.18168",
  "version": "v1",
  "published": "2025-01-30T06:45:34.000Z",
  "updated": "2025-01-30T06:45:34.000Z",
  "title": "Competition between excitonic insulators and quantum Hall states in correlated electron-hole bilayers",
  "authors": [
    "Ruishi Qi",
    "Qize Li",
    "Zuocheng Zhang",
    "Zhiyuan Cui",
    "Bo Zou",
    "Haleem Kim",
    "Collin Sanborn",
    "Sudi Chen",
    "Jingxu Xie",
    "Takashi Taniguchi",
    "Kenji Watanabe",
    "Michael F. Crommie",
    "Allan H. MacDonald",
    "Feng Wang"
  ],
  "categories": [
    "cond-mat.mes-hall",
    "cond-mat.str-el"
  ],
  "abstract": "Excitonic insulators represent a unique quantum phase of matter, providing a rich ground for studying exotic quantum bosonic states. Strongly coupled electron-hole bilayers, which host stable dipolar exciton fluids with an exciton density that can be adjusted electrostatically, offer an ideal platform to investigate correlated excitonic insulators. Based on electron-hole bilayers made of MoSe2/hBN/WSe2 heterostructures, here we study the behavior of excitonic insulators in a perpendicular magnetic field. We report the observation of excitonic quantum oscillations in both Coulomb drag signals and electrical resistance at low to medium magnetic fields. Under a strong magnetic field, we identify multiple quantum phase transitions between the excitonic insulator phase and the bilayer quantum Hall insulator phase. These findings underscore the interplay between the electron-hole interactions and Landau level quantization that opens new possibilities for exploring quantum phenomena in composite bosonic insulators.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2025-01-30T06:45:34.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "excitonic insulator",
      "quantum hall states",
      "correlated electron-hole bilayers",
      "quantum hall insulator phase",
      "exotic quantum bosonic states"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}