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Weyl points in a magnetic tetrahedral photonic crystal
- 发表刊物：Optics express
- 摘要：Weyl points have recently been predicted and experimentally observed in double-gyroid photonic crystals, as well as in other complex photonic structures such as stacked hexagonal-lattice slabs and helical waveguide arrays. In all above structures, the Weyl points are located between high frequency bands, and are difficult to probe experimentally. In this work, we show that a photonic crystal with a simple tetrahedral structure can host frequency-isolated Weyl points between the second and third bands. The minimal number of two Weyl points emerges from a threefold quadratic degeneracy at the …
- 卷号：25
- 期号：14
- 页面范围：15772-15777
- 是否译文：否
- 发表时间：2017-07-10
