• 文献标题:   Proximity Effects Induced in Graphene by Magnetic Insulators: First-Principles Calculations on Spin Filtering and Exchange-Splitting Gaps
  • 文献类型:   Article
  • 作  者:   YANG HX, HALLAL A, TERRADE D, WAINTAL X, ROCHE S, CHSHIEV M
  • 作者关键词:  
  • 出版物名称:   PHYSICAL REVIEW LETTERS
  • ISSN:   0031-9007
  • 通讯作者地址:   INAC
  • 被引频次:   150
  • DOI:   10.1103/PhysRevLett.110.046603
  • 出版年:   2013

▎ 摘  要

We report on first-principles calculations of spin-dependent properties in graphene induced by its interaction with a nearby magnetic insulator (europium oxide, EuO). The magnetic proximity effect results in spin polarization of graphene pi orbitals by up to 24%, together with a large exchange-splitting band gap of about 36 meV. The position of the Dirac cone is further shown to depend strongly on the graphene-EuO interlayer. These findings point toward the possible engineering of spin gating by the proximity effect at a relatively high temperature, which stands as a hallmark for future all-spin information processing technologies. DOI: 10.1103/PhysRevLett.110.046603