Two-Dimensional Plasmons in Laterally Confined 2D Electron Systems.

ABSTRACT: The collective oscillations of charge density (plasmons) in conductive solids are basic excitations that determine the dynamic response of the system. In infinite two-dimensional (2D) electron systems, plasmons have gapless dispersion covering a broad spectral range from subterahertz to infrared, which is promising in light-matter applications. We discuss the state-of-the-art physics of 2D plasmons, especially in confined 2D electron systems in stripe and disk geometry, using the simplest approach for conductivity. When the metal gate is placed in the vicinity of the 2D electron system, an analytical description of the plasmon frequency and damping can be easily obtained. We also analyze gated plasmons in the disk when it was situated at various distances from the gate, and discuss in deta

SUBMITTER: Zagorodnev IV 

PROVIDER: S-EPMC10058787 | biostudies-literature | 2023 Mar

REPOSITORIES: biostudies-literature