Alloy‐disorder‐scattering‐limited mobility of electrons in cylindrical quantum well wires

Abstract

PACS 73.63.NmWe study the effect of the alloy-disorder-scattering on the electron transport in a quasi-one-dimensional semiconductor. Analytical calculations of the alloy-disorder-limited momentum relaxation time for carrier scattering in a cylindrical quantum wire using an infinite well model. The transverse part of the carrier wave function is taken to be a Bessel function. It is found that the one-dimensional mobility is significantly greater than two-dimensional mobility. It is shown that the alloy-disorder-scattering-limited mobility increases with increasing wire radius and increases with increasing temperature. We compare our results with different scattering mechanisms for one-dimensional systems. Results are also included for the alloy composition dependence of the mobility.

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