論文 Chern Insulators at Integer and Fractional Filling in Moiré Pentalayer Graphene

Dacen Waters ; Anna Okounkova ; Ruiheng Su ; Boran Zhou ; Jiang Yao ; Kenji Watanabe SAMURAI ORCID (National Institute for Materials Science) ; Takashi Taniguchi SAMURAI ORCID (National Institute for Materials Science) ; Xiaodong Xu ; Ya-Hui Zhang ; Joshua Folk ; Matthew Yankowitz

PhysRevX.15.011045.pdf
Download file (1.72MB)
Download as zip (1.58MB)
コレクション

引用
Dacen Waters, Anna Okounkova, Ruiheng Su, Boran Zhou, Jiang Yao, Kenji Watanabe, Takashi Taniguchi, Xiaodong Xu, Ya-Hui Zhang, Joshua Folk, Matthew Yankowitz. Chern Insulators at Integer and Fractional Filling in Moiré Pentalayer Graphene. Physical Review X. 2025, 15 (1), 011045. https://doi.org/10.1103/physrevx.15.011045

説明:

(abstract)

The advent of moiré platforms for engineered quantum matter has led to discoveries of integer and fractional quantum anomalous Hall effects, with predictions for correlation-driven topological states based on electron crystallization. We report an array of trivial and topological insulators formed in a moir ́e lattice of rhomobohedral pentalayer graphene (RPG), including signatures of multiple topological electronic crystal states with Chern numbers of C = 1 at fractional fillings of the moir ́e lattice: ν = 1/4, 1/3, and 2/3. At ν = 2/3 the system exhibits an integer quantum anomalous Hall effect at zero magnetic field, but further develops an incipient C = 2/3 fractional Chern insulator in a modest field. Our results establish moir ́e RPG as a fertile platform for studying the competition and potential intertwining of integer and fractional Chern insulators

権利情報:

キーワード: Chern insulators, moiré pentalayer graphene
, fractional filling

刊行年月日: 2025-02-27

出版者: American Physical Society (APS)

掲載誌:

  • Physical Review X (ISSN: 21603308) vol. 15 issue. 1 011045

研究助成金:

  • Energy Frontier Research Centers
  • U.S. Department of Energy
  • Office of Science
  • Basic Energy Sciences DE-SC0019443
  • Natural Sciences and Engineering Research Council of Canada
  • Canada Foundation for Innovation
  • Canadian Institute for Advanced Research
  • University of British Columbia
  • Canada First Research Excellence Fund
  • H2020 European Research Council
  • Horizon 2020 Framework Programme 951541
  • Oak Ridge Institute for Science and Education
  • Office of the Director of National Intelligence
  • Clean Energy Institute
  • Japan Society for the Promotion of Science 21H05233
  • Japan Society for the Promotion of Science 23H02052
  • Ministry of Education, Culture, Sports, Science and Technology
  • National Science Foundation DMR-2041972
  • National Science Foundation DMR-2237031
  • Materials Research Science and Engineering Center, Harvard University 2308979
  • M.J. Murdock Charitable Trust
  • Quantum Materials and Future Technologies Program
  • World Premier International Research Center Initiative

原稿種別: 出版者版 (Version of record)

MDR DOI:

公開URL: https://doi.org/10.1103/physrevx.15.011045

関連資料:

その他の識別子:

連絡先:

更新時刻: 2026-02-16 16:31:03 +0900

MDRでの公開時刻: 2026-02-16 13:57:33 +0900

ファイル名 サイズ
ファイル名 PhysRevX.15.011045.pdf (サムネイル)
application/pdf 		サイズ 1.72MB 詳細