A Study of the Relaxation-Time Model based on the Monte Carlo Simulation
The accuracy of the hydrodynamic transport model relies strongly on the proper expression of the relaxation times. A Monte Carlo study of these time constants in a highly inhomogeneous electric field is performed. The result shows that a more accurate description of the mo-bility would require higher- order moments of the distribution function beyond the average energy. The significance of the band structure and as-sumptions conventionally adopted for the hydrodynamic transport equa-tions are also discussed.
KeywordsAverage Energy Monte Carlo Calculation Energy Tensor Parabolic Model Inhomogeneous Electric Field
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