2014/04/25 by A. V. Nalitov, G. Malpuech, Hugo Terças +3
Materials Science · Physics and Astronomy · #Condensed matter physics #Coupling (piping) #Electron #Graphene #Graphene research and applications #Hamiltonian (control theory) #Lattice (music) #Magnetic field #Materials science #Physics #Point reflection #Quantum and electron transport phenomena #Quantum mechanics #Spin (aerodynamics) #Spin Hall effect #Spin polarization #Spin–orbit interaction #Symmetry (geometry) #Topological Materials and Phenomena #cond-mat.mes-hall #physics.optics
paper · pdf · doi:10.1103/physrevlett.114.026803
5 pages, 3 figures
arxiv created 2014/04/25 · openalex publication_date 2015/01/16 · arxiv updated 2015/06/19 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
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 (D3h) 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 revealed by the optical spin Hall effect.