Estimation of alloy scattering potential in ternaries from the study of two-dimensional electron transport
- 1 October 1983
- journal article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 43 (7), 689-691
- https://doi.org/10.1063/1.94446
Abstract
A theory of alloy scattering of two-dimensional electron gas in ternary semiconductors is developed by assuming spherically symmetric square scattering potential, randomly distributed between two kinds of alloy sites. The theory predicts a temperature independent mobility, in agreement with the experimental results for In0.53Ga0.47As. The calculated value at 4.2 K comes close to the experimental value, in which the effect of impurity scattering has been reduced by using an undoped spacer layer. It is concluded that the study of two-dimensional transport in the devices may lead to a correct estimation of the alloy scattering potential.Keywords
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