• 文献标题:   Sublattice Ferrimagnetism in Quasifreestanding Graphene
  • 文献类型:   Article
  • 作  者:   RYBKIN AG, TARASOV AV, RYBKINA AA, USACHOV DY, PETUKHOV AE, ERYZHENKOV AV, PUDIKOV DA, GOGINA AA, KLIMOVSKIKH II, DI SANTO G, PETACCIA L, VARYKHALOV A, SHIKIN AM
  • 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:   3
  • DOI:   10.1103/PhysRevLett.129.226401
  • 出版年:   2022

▎ 摘  要

We show that graphene can be magnetized by coupling to a ferromagnetic Co film through a Au monolayer. The presence of dislocation loops under graphene leads to a ferrimagnetic ordering of moments in the two C sublattices. It is shown that the band gap of similar to 80 meV in the K point has a magnetic nature and exists for ferrimagnetic ordering. Interplay between Rashba and exchange couplings is evidenced by spin splitting asymmetry in spin-ARPES measurements and fully supported by DFT calculation of a (9 x 9) unit cell. Owing to sign-opposite Berry curvatures for K and K' valleys, the synthesized system is promising for the realization of a circular dichroism Hall effect.