Interband Plasmonics with p-block Elements

摘要: We investigate the origin of near-ultraviolet visible plasmonic properties three elemental materials from p-block: Bi, Sb and Ga, with aim to achieve exploit unconventional effects beyond those provided by noble metals. At such aim, we review analyze a broad range optically-determined dielectric functions e these available in literature, covering wide photon energy (from 0.03 24 eV). It is shown that contribution Drude-like carriers e1 (real part e) negligible for Bi moderate Ga. In contrast, interband transitions show high oscillator strength yields strong negative visible. Therefore are not mere damping channel detrimental properties. Remarkably, induce fully (partially) localized surface plasmon-like resonances taking place (Ga) nanostructures Plasmonic achieved through transitions, without carrier excitation, very attractive phenomena because they may give rise rich class metamaterials which will be tunable tailoring band structure occupancy electronic states.