Selective Transmission of High-Frequency Phonons by a Superlattice: The "Dielectric" Phonon Filter
- 31 December 1979
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 43 (27), 2012-2016
- https://doi.org/10.1103/physrevlett.43.2012
Abstract
The zone folding in the acoustic-phonon dispersion curve of GaAs/AlGaAs superlattices is demonstrated using superconducting tunnel junctions as sources and detectors of quasimonochromatic phonons. We present data on selective transmission of high-frequency phonons due to narrow band reflection determined by the superlattice period.Keywords
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