Spin-orbit coupling and the optical spin Hall effect in photonic graphene.

@article{Nalitov2015SpinorbitCA,
  title={Spin-orbit coupling and the optical spin Hall effect in photonic graphene.},
  author={Anton V. Nalitov and Guillaume Malpuech and Hugo Terças and Dmitry D Solnyshkov},
  journal={Physical review letters},
  year={2015},
  volume={114 2},
  pages={
          026803
        }
}
We study the spin-orbit coupling induced by the splitting between TE and TM optical modes in a photonic honeycomb lattice. Using a tight-binding approach, we calculate analytically the band structure. Close to the Dirac point, we derive an effective Hamiltonian. We find that the local reduced symmetry (D_{3h}) transforms the TE-TM effective magnetic field into an emergent field with a Dresselhaus symmetry. As a result, particles become massive, but no gap opens. The emergent field symmetry is… CONTINUE READING

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