Experimental Separation of Phonon and Extrinsic Scattering in 2D Carrier Gases in GaAs

Authors: F. F. OUALI, H. R. FRANCIS, H. C. RHODES

Abstract: A new method which separates phonon scattering from extrinsic scattering in 2D gases in GaAs is presented. In contrast to previous ones, the technique makes no assumptions about the temperature dependence of the extrinsic scattering. The preliminary measurements of the phonon limited mobility \mu_{ph} on two electron gas samples show a Bloch-Grüneisen regime in the temperature range 1.2-4.5K and the results agree reasonably well with other experimental and theoretical work.

Keywords:

Full Text: PDF