A Method for Determining the Screening Length of the Coulombic Scattering in Non-Degenerate and Degenerate Semiconductors
نویسنده
چکیده
A method for directly measuring the inverse screening length in semiconductors in terms of ionized-impurity concentration and lattice temperature is demonstrated, based on a first-principle calculation of the effect of ionized-impurity scattering. No fitting parameters are involved in the derivation, which covers a wide range of doping concentrations and intrinsically complies with the Mathiessen rule. A new class of integrals is introduced in the calculation. The results are compared with the standard derivation of the inverse screening length from the perturbative solution of the Poisson equation.
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تاریخ انتشار 2004