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Seminars and workshops of department 23

Seminář / Tuesday, 06.02.2018 15:00

Abstract: We study the nonlinear dynamics and band transport in a semiconductor superlattice driven by a high-frequency acoustic plane wave. The transport characteristics of the system are investigated by using exact path-integral solutions of the Boltzmann transport equation. We show that electron drift and averaged velocities have strongly non-monotonic behavior induced by changing the amplitude of the acoustic wave. These nontrivial kinetic features are associated to some global bifurcations arising in connection with the variation of the control parameter. They cause...

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