Evidence for a first-order correction to the Boltzmann conductivity of a disordered three-dimensional electron gas
Analysis of data from several experimental groups on electron mobility in dense neutral gases from 3 to 300 K reveals the existence of a correction to the mobility arising from incoherent multiple scattering that is proportional to 1klo. This correction overwhelms the traditionally used 1(klo)2 term arising from coherent backscattering and dominates the gas density dependence of the mobility of thermal electrons in helium. We also reanalyze Si:P data above the metal-insulator transition in terms of these incoherent scattering corrections. © 1992 The American Physical Society.