Failure of Matthiessen's rule in the calculation of carrier mobility and alloy scattering effects in Ga 0.47 In 0.53 As

Publisher Website
Google Scholar
Abstract
Matthiessen's rule is shown to be an unacceptable approximation to analyse the scattering mechanisms in semiconductors, especially when deriving the alloy scattering-limited mobility from the experimental data. The anomalous temperature dependence of the ‘alloy scattering-limited mobility’ is caused by the failure of Matthiessen's rule in the presence of competing scattering modes. The electron Hall mobility calculated using the iterative technique explains accurately the experimental data using a single model for the alloy scattering mechanism and the appropriate material parameters.