Davide Piccinotti

Combinatorial search for plasmonic and epsilon-near-zero chalcogenide alloys

The chalcogenides represent a unique material platform, capable of providing high-index dielectric, plasmonic, ‘epsilon-near-zero’ (ENZ) or topological insulator properties when the constituent elements are combined in the right proportion. Moreover, they can exhibit reversible, non-volatile structural transitions between solid phases with vastly different electromagnetic properties. We report here on a combinatorial study of the synthesis of plasmonic chalcogenides, including compositions that can be switched between plasmonic and dielectric states.