• 文献标题:   Metal-Insulator Transition in Strained Graphene: A Quantum Monte Carlo Study
  • 文献类型:   Article
  • 作  者:   ZHANG LF, MA C, MA TX
  • 作者关键词:   graphene, metalinsulator transition, strain effect
  • 出版物名称:   PHYSICA STATUS SOLIDIRAPID RESEARCH LETTERS
  • ISSN:   1862-6254 EI 1862-6270
  • 通讯作者地址:  
  • 被引频次:   1
  • DOI:   10.1002/pssr.202100287 EA JUL 2021
  • 出版年:   2021

▎ 摘  要

Motivated by the possibility of a strain tuning effect on electronic properties of graphene, the semimetal-Mott insulator transition process on the uniaxial honeycomb lattice is numerically studied using the determinant quantum Monte Carlo method. As the simulations are based on the half-filled-repulsive Hubbard model, the system is sign-problem free. Herein, the temperature-dependent DC conductivity to characterize electronic transport properties is used. The data suggest that metal is suppressed in the presence of strain. More interestingly, within the finite-size-scaling study, a novel antiferromagnetic phase arises at around U similar to U c . Therefore, a phase diagram generated by the competition between interactions, and strain is established, which may help to expand the application of strain effect on graphene.