Electron mobility and velocity in compensated GaAs

Xu, Jingming; Bernhardt, Bruce A.; Shur, Michael; Chen, Chung-Hsu; Peczalski, Andrzej
August 1986
Applied Physics Letters;8/11/1986, Vol. 49 Issue 6, p342
Academic Journal
We present the results of a Monte Carlo calculation of the electron velocity and mobility, as well as mobility measurements in compensated GaAs. For appreciable compensation ratios, the peak velocity, negative differential mobility, and peak-to-valley velocity ratios are drastically reduced in comparison with those in uncompensated GaAs. This reduction makes the Gunn effect less likely to manifest itself in ion-implanted GaAs metal-semiconductor field-effect transistors and other GaAs devices where compensation is important.


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