Acoustic phonon scattering by a 2-dimensional electron gas
β Scribed by P.J.A. Carter; V.W. Rampton; M.I. Newton; K. McEnamey; M. Henini; O.H. Hughes
- Publisher
- Elsevier Science
- Year
- 1990
- Tongue
- English
- Weight
- 315 KB
- Volume
- 165-166
- Category
- Article
- ISSN
- 0921-4526
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β¦ Synopsis
We have used a heat pulse technique to study the 2-dimensional electron gas formed in a GaAs heterostructure. Investigating the scattering as a function of magnetic field yields direct information about the density of states and relative strengths of the coupling mechanisms.
π SIMILAR VOLUMES
We have shown that for quantum wells placed close to the stress-free surface of the semiconductor heterostructure, the energy relaxation rate of two-dimensional electrons interacting with acoustic phonons at low temperatures (Bloch-GrΓΌneisen regime) is changed considerably in comparison with that of
Cyclotron resonance linewidths due to scattering by acoustic phonons via deformation potential and piezoelectric interaction have been calculated for a two-dimensional electron gas formed in heterojunctions. The finite extent of the wave function along the direction of quantisation and screening due
A thermocouple consisting of a two-dimensional electron gas (2DEG) and the doped contact regions was found to be a sensitive detector for ballistic phonons.