Figure 2: Band structure of a C3-symmetric Weyl photonic crystal. | Nature Communications

Figure 2: Band structure of a C3-symmetric Weyl photonic crystal.

From: Photonic crystals possessing multiple Weyl points and the experimental observation of robust surface states

Figure 2

(a) Unit cell of the crystal where the PEC cylinder is replaced by a triangular rod, reducing the symmetry to C3. (b) Band structure in the plane of kz=0. All three double Weyl points still lie at Γ. The quadratic dispersions in the kx–ky plane are also shown near these double Weyl points. (c) Band structure from −A to A, showing the linear dispersion of the double Weyl points in the z direction.

Back to article page