TY - GEN
T1 - A Monte Carlo analysis of diffusion-noise properties in GaAs-AlGaAs quantum wells
AU - Brunetti, Rossella
AU - Goodnick, Steven M.
PY - 1987/1/1
Y1 - 1987/1/1
N2 - We present a general analysis of steady-state velocity fluctuations, diffusion and noise for electrons in GaAs-AlGaAs quantum wells under high-field conditions using an Ensemble Monte Carlo simulation. Here we analyze for the first time diffusivity and noise problems in a two-dimensional structure by means of the velocity autocorrelation function. From the Monte Carlo simulation we obtain results for the diffusion coefficient at various field strengths and for the autocorrelation function of velocity fluctuations as a function of time for different physical conditions. We also show the power spectral density of velocity fluctuations as a function of frequency for such systems, and a comparison is made with the available data in the literature. The role of interband scattering, a new noise source not present in bulk structures, is discussed, together with the comparison between bulk and 2D results.
AB - We present a general analysis of steady-state velocity fluctuations, diffusion and noise for electrons in GaAs-AlGaAs quantum wells under high-field conditions using an Ensemble Monte Carlo simulation. Here we analyze for the first time diffusivity and noise problems in a two-dimensional structure by means of the velocity autocorrelation function. From the Monte Carlo simulation we obtain results for the diffusion coefficient at various field strengths and for the autocorrelation function of velocity fluctuations as a function of time for different physical conditions. We also show the power spectral density of velocity fluctuations as a function of frequency for such systems, and a comparison is made with the available data in the literature. The role of interband scattering, a new noise source not present in bulk structures, is discussed, together with the comparison between bulk and 2D results.
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M3 - Conference contribution
AN - SCOPUS:84907844023
SN - 9780444704771
T3 - European Solid-State Device Research Conference
SP - 181
EP - 184
BT - ESSDERC 1987 - 17th European Solid State Device Research Conference
PB - IEEE Computer Society
T2 - 17th European Solid State Device Research Conference, ESSDERC 1987
Y2 - 14 September 1987 through 17 September 1987
ER -