• 文献标题:   Local characterization and engineering of proximitized correlated states in graphene/NbSe2 vertical heterostructures
  • 文献类型:   Article
  • 作  者:   ZHANG ZM, WATANABE K, TANIGUCHI T, LEROY BJ
  • 作者关键词:  
  • 出版物名称:   PHYSICAL REVIEW B
  • ISSN:   2469-9950 EI 2469-9969
  • 通讯作者地址:   Univ Arizona
  • 被引频次:   0
  • DOI:   10.1103/PhysRevB.102.085429
  • 出版年:   2020

▎ 摘  要

Using a van der Waals (vdW) vertical heterostructure consisting of monolayer graphene, monolayer hBN and NbSe2, we have performed local characterization of induced correlated states in different configurations. At a temperature of 4.6 K, we have shown that both superconductivity and charge density waves can be induced in graphene from NbSe2 by proximity effects. By applying a vertical magnetic field, we imaged the Abrikosov vortex lattice and extracted the coherence length for the proximitized superconducting graphene. We further show that the induced correlated states can be completely blocked by adding a monolayer hBN between the graphene and the NbSe2, which demonstrates the importance of the tunnel barrier and surface conditions between the normal metal and superconductor for the proximity effect.