Theory of the Dirac half metal and quantum anomalous Hall effect in Mn-intercalated epitaxial graphene

  title={Theory of the Dirac half metal and quantum anomalous Hall effect in Mn-intercalated epitaxial graphene},
  author={Yuanchang Li and Damien West and Huaqing Huang and Jia Li and S. B. Zhang and Wenhui Duan},
  journal={Physical Review B},
The prospect of a Dirac half metal, a material which is characterized by a bandstructure with a gap in one spin channel but a Dirac cone in the other, is of both fundamental interest and a natural candidate for use in spin-polarized current applications. However, while the possibility of such a material has been reported based on model calculations[H. Ishizuka and Y. Motome, Phys. Rev. Lett. 109, 237207 (2012)], it remains unclear what material system might realize such an exotic state. Using… 

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  • Rev. B 74, 033413
  • 2006


  • Rev. B 77, 235412
  • 2008

and M

  • den Nijs, Phys. Rev. Lett. 49, 405
  • 1982

Nature 392

  • 794
  • 1998


  • Rev. B 74, 195118
  • 2006

New J

  • Phys. 9, 385
  • 2007

ACS Nano 6

  • 6562,
  • 2012


  • Today 63, 33-38
  • 2010


  • Rev. Lett. 95, 146802
  • 2005