• 文献标题:   Electric field-induced chirald plus idsuperconductivity in AA-stacked bilayer graphene: a quantum Monte Carlo study
  • 文献类型:   Article
  • 作  者:   FANG SC, ZHENG XJ, LIN HQ, HUANG ZB
  • 作者关键词:   chirald plus idsuperconductor, bilayer graphene, electric field, pairing symmetry
  • 出版物名称:   JOURNAL OF PHYSICSCONDENSED MATTER
  • ISSN:   0953-8984 EI 1361-648X
  • 通讯作者地址:  
  • 被引频次:   3
  • DOI:   10.1088/1361-648X/abb685
  • 出版年:   2021

▎ 摘  要

Using the constrained-path quantum Monte Carlo method, we systematically study the half-filled Hubbard model on AA-stacked honeycomb lattice. Our simulations demonstrate that a dominant chirald+idwave superconductivity can be induced by a perpendicular electric field. At a fixed electric field, the effective pairing interaction of chirald+idsuperconductivity exhibits an increasing behavior with increasing the on-site Coulomb interaction. We attribute the electric field-inducedd+idsuperconductivity to an increased density of states near the Fermi energy and robust antiferromagnetic spin correlation upon turning on electric field. Our results strongly suggest that the AA-stacked graphene system is a good candidate for chirald+idsuperconductor.