• 文献标题:   Fractional Quantum Hall Effect with Unconventional Pairing in Monolayer Graphene
  • 文献类型:   Article
  • 作  者:   SHARMA A, PU SY, BALRAM AC, JAIN JK
  • 作者关键词:  
  • 出版物名称:   PHYSICAL REVIEW LETTERS
  • ISSN:   0031-9007 EI 1079-7114
  • 通讯作者地址:  
  • 被引频次:   2
  • DOI:   10.1103/PhysRevLett.130.126201
  • 出版年:   2023

▎ 摘  要

Motivated by the observation of even denominator fractional quantum Hall effect in the n = 3 Landau level of monolayer graphene [Kim et al., Nat. Phys. 15, 154 (2019)], we consider a Bardeen-Cooper-Schrieffer variational state for composite fermions and find that the composite-fermion Fermi sea in this Landau level is unstable to an f -wave pairing. Analogous calculation suggests the possibility of a p -wave pairing of composite fermions at half filling in the n = 2 graphene Landau level, whereas no pairing instability is found at half filling in the n = 0 and n = 1 graphene Landau levels. The relevance of these results to experiments is discussed.