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- W2920995749 abstract "Valley-Hall-like photonic topological insulators are designed inkagome-lattice photonic crystals with C3v point-group symmetry. The photoniccrystal consists of circular air holes in pure dielectric materials. Differentfrom conventional valley-Hall photonic topological insulators with nonvanishingBerry curvature and valley Chern numbers, the proposed insulators havevanishing Berry curvature and their topological invariants are described by aquantized electric polarization. Topological transition can be realized bytuning the structural size and topological edge states appear at the interfacebetween photonic crystals with different topological phases. Numerical analysesshow the proposed insulators preserve important features of valley-Hallphotonic insulators such as valley transport with little backscattering." @default.
- W2920995749 created "2019-03-22" @default.
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- W2920995749 date "2019-03-08" @default.
- W2920995749 modified "2023-09-27" @default.
- W2920995749 title "Valley-Hall-like photonic topological insulators with vanishing Berry curvature" @default.
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