Tunable intraband optical conductivity and polarization-dependent epsilon-near-zero behavior in black phosphorus
Souvik Biswas, William S. Whitney, Meir Grajower, Kenji Watanabe, Takashi Taniguchi, Hans A. Bechtel, George R. Rossman, Harry A. Atwater
Abstract
, we were able to observe a polarization-dependent epsilon-near-zero behavior in the dielectric permittivity of BP. The intraband polarization sensitivity is intimately linked to the difference in effective fermionic masses along the two crystallographic directions, as confirmed by our measurements. Our results suggest the potential of multilayer BP to allow new optical functions for emerging photonics applications.
Topics & Concepts
Polarization (electrochemistry)Black phosphorusPhotonicsBand gapDopingCondensed matter physicsMaterials scienceOptical conductivityFermi levelPermittivityOptoelectronicsConductivityDielectricElectronPhysicsChemistryQuantum mechanicsPhysical chemistry2D Materials and ApplicationsPlasmonic and Surface Plasmon ResearchMetamaterials and Metasurfaces Applications