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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Seminars and workshops of department 23
Seminář / Tuesday, 06.02.2018 15:00
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Past seminars and workshops
Katarzyna Roszak | Non-Markovian noise at the Fermi edge singularity in quantum dots | 18.05.2010 15:00 |
Jan Kuriplach | Magnetic grain boundaries in Ni and Fe and defect structure in zirconia-based materials | 23.03.2010 15:00 |
František Máca | Magnetic order in the ultrathin iron film on the Ir(001) surface | 09.03.2010 15:00 |
Jan Kuneš | From Clusters to Crystals: Application of the Dynamical Mean-Field Theory to Materials | 02.02.2010 15:00 |
Jan Rusz | Dynamical screening effects in X-ray absorption spectra of graphene and BN | 05.01.2010 15:00 |
Martin Žonda | Phase transitions in the three-dimensional Falicov-Kimball model | 29.09.2009 15:00 |
Database of past seminars (1995-2009) | 01.01.2008 00:03 |
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Department of Condensed Matter Theory (23)
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