Diagonal and Off-Diagonal Contributions to Autocorrelation of Velocity Fluctuations in Semiconductors
- 11 April 1983
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 50 (15) , 1164-1167
- https://doi.org/10.1103/physrevlett.50.1164
Abstract
A theoretical analysis of velocity fluctuations in semiconductors is presented, and results obtained from a Monte Carlo procedure are shown for Si. It has been found in particular that (i) off-diagonal contributions to the velocity autocorrelation function must be taken into account; (ii) the convective contribution is positive; and (iii) a long tail in the autocorrelation function, due to intervalley fluctuations, may be present.Keywords
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