Highly spin-polarized Dirac fermions at the graphene/Co interface

@article{Marchenko2015HighlySD,
  title={Highly spin-polarized Dirac fermions at the graphene/Co interface},
  author={Dmitry Marchenko and Andrei Varykhalov and Jaime S{\'a}nchez-Barriga and Oliver Rader and Carlo Carbone and Gustav Bihlmayer},
  journal={Physical Review B},
  year={2015},
  volume={91},
  pages={235431}
}
The interface of graphene with ferromagnets is highly relevant for spintronics, because graphene on Co(0001) shows a largely intact Dirac cone and strong hybridization with Co 3d states breaking the sublattice symmetry that had been considered mutually exclusive. Here we show by spinand angle-resolved photoemission that the Dirac cone and Dirac point are also highly spin polarized (∼ −25%), which reinforces the puzzling issue of a strong graphene-substrate interaction. The problem is solved by… Expand

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