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Experimental observation of robust surface states on photonic crystals possessing single and double Weyl points (1512.04681v1)

Published 15 Dec 2015 in physics.optics and cond-mat.mes-hall

Abstract: We designed and fabricated a time-reversal invariant Weyl photonic crystal that possesses single Weyl nodes with topological charge of 1 and double Weyl nodes with a higher topological charge of 2. Using numerical simulations and microwave experiment, nontrivial band gaps with nonzero Chern numbers for a fixed kz was demonstrated. The robustness of the surface state between the Weyl photonic crystal and PEC against kz-conserving scattering was experimentally observed.

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