Discrete Plasmons in Finite Semiconductor Multilayers
- 12 May 1986
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 56 (19) , 2092-2095
- https://doi.org/10.1103/physrevlett.56.2092
Abstract
We observe discrete plasmons in layered 2D electron gases with a large, but finte, number of periods. The twofold degeneracy of plasmon modes with wave numbers in the first Brillouin zone of the infinite system is lifted by the loss of complete periodicity in the finite system. These characteristic discrete plasmon doublets are measured in inelastic-light-scattering spectra of multilayer GaAs/(AlGa)As heterostructures.Keywords
This publication has 21 references indexed in Scilit:
- Inelastic light scattering by collective charge-density excitations in semi-infinite semiconductor superlatticesPhysical Review B, 1985
- Charge-Density Excitation on a Lateral Surface of a Semiconductor Superlattice and Edge Plasmons of a Two-Dimensional Electron GasPhysical Review Letters, 1985
- Plasmons in Layered FilmsPhysical Review Letters, 1985
- Dispersion of collective intersubband excitations in semiconductor superlatticesPhysical Review B, 1985
- Charge-Density Excitations at the Surface of a Semiconductor Superlattice: A New Type of Surface PolaritonPhysical Review Letters, 1983
- Plasma dispersion in a layered electron gas: A determination in GaAs-(AlGa) As heterostructuresPhysical Review B, 1982
- The influence of temperature and incident light intensity on single particle and collective excitations in multilayer structuresSurface Science, 1982
- Intersubband spectroscopy of two dimensional electron gases: Coulomb interactionsSolid State Communications, 1980
- Inelastic light scattering by charge carrier excitations in two-dimensional plasmas: Theoretical considerationsSurface Science, 1980
- Electrodynamics of a layered electron gas. II. Periodic arrayAnnals of Physics, 1974