Abstract
The effect of quantum screening on the magnetic field dependence of low field longitudinal mobility has been studied in the extreme quantum limit (EQL) in n-InSb at low temperatures to interpret the experimental results in n-InSb. The calculation of the low temperature mobility in the EQL includes the various scattering mechanisms which are dominant at low temperatures and other complexities such as band nonparabolicity, and non-equipartition of phonons. The effect of quantum screening, arising due to the quantum nature of electron gas in the presence of a quantizing magnetic field, has been included. The variation of mobility as a function of magnetic field and temperature has been studied in n-InSb both for classical and quantum screening. The theoretical results have been compared with the experimental results in n-InSb. The inclusion of quantum screening has been found to reduce the mobility compared to the mobility obtained with the classical screening and the results for the quantum screening is found to be closer to the experimental results. Hence, the inclusion of quantum screening improves the theoretical results.
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