11 June 2003 Synchronization of dipole domains in GHz-driven superlattices
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Abstract
We consider a semiconductor superlattice biased into the regime of negative differential conductivity and driven by an additional GHz ac voltage, and find frequency-locked or quasiperiodic propagating field domains. With increasing driving frequency, the complex impedance exhibits strong variations of its amplitude and phase. An anomalous phase shift appears as a result of phase synchronization of the traveling domains.
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A. K. Jappsen, A. Amann, A. Wacker, Ekkehard Schomburg, E. Schoell, "Synchronization of dipole domains in GHz-driven superlattices", Proc. SPIE 5023, 10th International Symposium on Nanostructures: Physics and Technology, (11 June 2003); doi: 10.1117/12.513815; https://doi.org/10.1117/12.513815
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