The magnetophonon effect in p-type PbTe and Pb0.8Sn0.2Te
- 14 November 1977
- journal article
- Published by IOP Publishing in Journal of Physics C: Solid State Physics
- Vol. 10 (21) , L611-L615
- https://doi.org/10.1088/0022-3719/10/21/005
Abstract
The magnetophonon effect is observed in thin films of high-purity p-type PbTe and in a bulk sample of p-type Pb0.8Sn0.2Te with very low carrier concentration. The fundamental fields of the series of peaks and the frequencies of the phonons involved are found to be independent of the carrier concentration (which ranged from 1.1*1022 m-3 to 1.5*1024 m-3). The phonon frequency estimated from the fundamental field and the cyclotron mass in the PbTe is 115+or-10 cm-1 even though the coupled plasmon-phonon-cyclotron frequency observed in magneto-optical experiments with the same samples was in excess of 150 cm-1 and increased rapidly with carrier concentration.Keywords
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