Jappsen, A.-K. and Amann, A. and Wacker, A. and Schoell, E. and Schomburg, E. (2002) High-frequency impedance of driven superlattices. JOURNAL OF APPLIED PHYSICS, 92 (6). pp. 3137-3140. ISSN 0021-8979
Full text not available from this repository.Abstract
The complex impedance of a semiconductor superlattice biased into the regime of negative differential conductivity and driven by an additional gigahertz ac voltage is computed. From a simulation of the nonlinear spatiotemporal dynamics of traveling field domains we obtain strong variations of the amplitude and phase of the impedance with increasing driving frequency. These serve as fingerprints of the underlying quasiperiodic or frequency locking behavior. An anomalous phase shift appears as a result of phase synchronization of the traveling domains. If the imaginary part of the impedance is compensated by an external inductor, both the frequency and the intensity of the oscillations strongly increase. (C) 2002 American Institute of Physics.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | SEMICONDUCTOR SUPERLATTICES; SELF-OSCILLATIONS; CHAOS; SYNCHRONIZATION; DOMAINS; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Experimental and Applied Physics |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 27 Aug 2021 07:55 |
| Last Modified: | 27 Aug 2021 07:55 |
| URI: | https://pred.uni-regensburg.de/id/eprint/39874 |
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