Angle-insensitive mid-infrared photonic bandgap in one-dimensional photonic crystal containing single-material semiconductor hyperbolic metamaterial layersXuan Zhang, Tianming Li, Hanying Deng, Guanghui Liu, Feng Wu and Chengping YinEur. Phys. J. B, 94 8 (2021) 162DOI: https://doi.org/10.1140/epjb/s10051-021-00175-y