Electron–electron scattering and the propagation of electron beams in a two-dimensional electron gas

Experimental studies of electron-beam propagation in a degenerate 2DEG in a GaAs-(Al,Ga)As heterostructure are presented for a wide range of injection energies, 0< E⩽ E F. The electron beam is injected and detected in the 2DEG via electrostatically defined quantum point-contacts with typical dist...

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Bibliographic Details
Published in:Physica. E, Low-dimensional systems & nanostructures Low-dimensional systems & nanostructures, 2000-02, Vol.6 (1), p.310-313
Main Authors: Buhmann, H, Predel, H, Molenkamp, L.W, Gurzhi, R.N, Kopeliovich, A.I, Kalinenko, A.N, Yanovsky, A.V
Format: Article
Language:English
Subjects:
Electron–electron scattering
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Summary:Experimental studies of electron-beam propagation in a degenerate 2DEG in a GaAs-(Al,Ga)As heterostructure are presented for a wide range of injection energies, 0< E⩽ E F. The electron beam is injected and detected in the 2DEG via electrostatically defined quantum point-contacts with typical distances of 3.4 μm . Energy-dependent beam injection is used to reveal the characteristics of the electron-beam propagation. Considering the specific character for electron–electron scattering events in 2D systems linearized Boltzmann equations could be used to model the experimental observations.
ISSN:1386-9477
1873-1759
DOI:10.1016/S1386-9477(99)00163-0