Collective intersubband resonances of inversion electrons on GaAs
- 15 May 1989
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 39 (15) , 11171-11174
- https://doi.org/10.1103/physrevb.39.11171
Abstract
Collective intersubband resonance of inversion electrons in gated AlAs-GaAs single heterojunctions is studied with Fourier-transform spectroscopy using grating coupler techniques. Large grating periods are chosen to test the interface potential at nearly zero wave-vector transfer parallel to the sample plane. With highly efficient grating couplers up to three intersubband transitions are excited simultaneously. A coupling of the collective intersubband resonance to confined AlAs optical phonons is observed.
Keywords
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