Coupled Bloch-Phonon Oscillations in Semiconductor Superlattices
| Type of Publication: | Journal article |
| URI (citable link): | http://nbn-resolving.de/urn:nbn:de:bsz:352-opus-45777 |
| Author: | Dekorsy, Thomas; Bartels, Albrecht; Kurz, Heinrich; Köhler, Klaus; Hey, Rudolf; Ploog, Klaus |
| Year of publication: | 2000 |
| Published in: | Physical Review Letters ; 85 (2000), 5. - pp. 1080-1083 |
| DOI (citable link): | https://dx.doi.org/10.1103/PhysRevLett.85.1080 |
| Summary: |
We investigate coherent Bloch oscillations in GaAs/AlxGa1-xAs superlattices with electronic miniband widths larger than the optical phonon energy. In these superlattices the Bloch frequency can be tuned into resonance with the optical phonon. Close to resonance a direct coupling of Bloch oscillations to LO phonons is observed which gives rise to the coherent excitation of LO phonons. The density necessary for driving coherent LO phonons via Bloch oscillations is about 2 orders of magnitude smaller than the density necessary to drive coherent LO phonons in bulk GaAs. The experimental observations are confirmed by the theoretical description of this phenomenon.
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| Subject (DDC): | 530 Physics |
| Link to License: | In Copyright |
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DEKORSY, Thomas, Albrecht BARTELS, Heinrich KURZ, Klaus KÖHLER, Rudolf HEY, Klaus PLOOG, 2000. Coupled Bloch-Phonon Oscillations in Semiconductor Superlattices. In: Physical Review Letters. 85(5), pp. 1080-1083. Available under: doi: 10.1103/PhysRevLett.85.1080
@article{Dekorsy2000Coupl-4812, title={Coupled Bloch-Phonon Oscillations in Semiconductor Superlattices}, year={2000}, doi={10.1103/PhysRevLett.85.1080}, number={5}, volume={85}, journal={Physical Review Letters}, pages={1080--1083}, author={Dekorsy, Thomas and Bartels, Albrecht and Kurz, Heinrich and Köhler, Klaus and Hey, Rudolf and Ploog, Klaus} }
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