Far-infrared emission from two-dimensional plasmons in AlGaAs/GaAs heterointerfaces
- 24 March 1986
- journal article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 48 (12) , 776-778
- https://doi.org/10.1063/1.96718
Abstract
A modified dispersion formula describing two-dimensional (2D) plasmons in AlGaAs/GaAs heterointerfaces was derived and its validity was experimentally checked by observation of the far-infrared signal from grating coupled 2D plasmons in selectively doped AlGaAs/GaAs heterointerfaces. The plasmon resonance frequency shift towards higher energy observed by Höpfel et al. [Surf. Sci. 113, 118 (1982)] can be explained by our present dispersion formula.Keywords
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