IMPROVED MONTE-CARLO METHOD FOR THE STUDY OF ELECTRON-TRANSPORT IN DEGENERATE SEMICONDUCTORS

Standard Lugli-Ferry method for including Pauli principle in Monte Car lo simulations yields unphysical results when the system is strongly d egenerate. For example, one finds that distribution function is higher than unity in low energy region. In this article we explain the origi n of these errors. We propose simple correction in order to overcome t hese problems without significant increase of required computational r esources. We applied our method to the study of electron transport in degenerate In0.53Ga0.47As at 77 K. We found good agreement between obt ained results and theoretical Fermi-Dirac distribution in zero field l imit. (C) 1998 American Institute of Physics. [S0021-8979(98)01519-9]