Superfluid weight and Berezinskii-Kosterlitz-Thouless transition temperature of strained graphene

  title={Superfluid weight and Berezinskii-Kosterlitz-Thouless transition temperature of strained graphene},
  author={Feng Xu and Lei Zhang and Liyun Jiang and Wen-Deng Huang and Chung Yu Mou},
  journal={Chinese Journal of Physics},
  • Feng Xu, L. Zhang, +2 authors C. Mou
  • Published 1 January 2021
  • Materials Science, Physics
  • Chinese Journal of Physics
Abstract We obtain the superfluid weight and Berezinskii-Kosterlitz-Thouless (BKT) transition temperature for highly unconventional superconducting states with the coexistence of chiral d-wave superconductivity, charge density waves and pair density waves in the strained graphene. Our results show that the strain-induced flat bands can promote the superconducting transition temperature approximately 50 % compared to that of the original doped graphene, which suggests that the flat-band… 

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