Magneto-optical absorption in a two-dimensional electron grid
- 23 March 1992
- journal article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 60 (12) , 1510-1512
- https://doi.org/10.1063/1.107287
Abstract
We have fabricated a two-dimensional (2D) electron grid in the high mobility GaAs/Al0.35Ga0.65As heterostructure and observed, in the magneto-optical absorption, new resonances and an anomalous dispersion, similar to that recently reported by Kern et al.1 in antidots in a high density InGaAs/AlInAs heterostructure. We have studied their dependencies on the 2D electron density and demonstrate their plasma origin. The anomaly in magnetic field dependence is explained by the mixing of cyclotron resonance and edge magnetoplasma modes in this 2D electron microstructure.Keywords
This publication has 14 references indexed in Scilit:
- Nonlocal dispersion of edge magnetoplasma excitations in a two-dimensional electron systemPhysical Review Letters, 1991
- Collective excitations in antidotsPhysical Review Letters, 1991
- Quantum dots in a magnetic field: Role of electron-electron interactionsPhysical Review Letters, 1990
- Edge magnetoplasmons in the fractional-quantum-Hall-effect regimePhysical Review B, 1990
- Voltage-tunable quantum dots on siliconPhysical Review B, 1990
- A lateral-surface-superlattice structure on GaAs/AlGaAs for far-infrared and magnetocapacitance measurementsJournal of Vacuum Science & Technology B, 1989
- Charged-particle interaction with liquids: Ripplon excitationsPhysical Review B, 1989
- Dimensional resonance of the two-dimensional electron gas in selectively doped GaAs/AlGaAs heterostructuresPhysical Review B, 1983
- Frequency Dependence of the Electron Conductivity in the Silicon Inversion Layer in the Metallic and Localized RegimesPhysical Review Letters, 1975
- Cyclotron Resonance and de Haas-van Alphen Oscillations of an Interacting Electron GasPhysical Review B, 1961