Observation of unconventional edge states in 'photonic graphene'.

@article{Plotnik2014ObservationOU,
  title={Observation of unconventional edge states in 'photonic graphene'.},
  author={Yonatan Plotnik and Mikael C. Rechtsman and Daohong Song and Matthias Heinrich and Julia M. Zeuner and Stefan Nolte and Yaakov Lumer and Natalia Malkova and Jingjun Xu and Alexander Szameit and Zhigang Chen and Mordechai Segev},
  journal={Nature materials},
  year={2014},
  volume={13 1},
  pages={
          57-62
        }
}
Graphene, a two-dimensional honeycomb lattice of carbon atoms, has been attracting much interest in recent years. Electrons therein behave as massless relativistic particles, giving rise to strikingly unconventional phenomena. Graphene edge states are essential for understanding the electronic properties of this material. However, the coarse or impure nature of the graphene edges hampers the ability to directly probe the edge states. Perhaps the best example is given by the edge states on the… 

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