Localized surface plasmons in nanostructured monolayer black phosphorus

We theoretically investigate localized surface plasmon resonances (LSPR) in a monolayer, nanostructured black phosphorus (BP). Using finite-difference time-domain simulations, we demonstrate LSPRs at mid-infrared and far-infrared wavelength regime in BP nanoribbon arrays. Black phosphorus nanostructures provide polarization dependent, anisotropic plasmonic response.