Landau-Placzek Model of Light Scattering from Acoustic Plasma Waves in Solid State
The general Landau‐Placzek theory of quasielastic Raman scattering is applied to p‐type semiconductor samples under the action of continuous laser illumination that produces intervalence band photoexcitation. The hydrodynamical theory of high‐frequency fluctuations in a two‐component system with int...
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| Published in | physica status solidi (b) Vol. 203; no. 2; pp. 465 - 472 |
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| Main Author | |
| Format | Journal Article |
| Language | English |
| Published |
Berlin
WILEY-VCH Verlag
01.10.1997
WILEY‐VCH Verlag |
| Online Access | Get full text |
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| Summary: | The general Landau‐Placzek theory of quasielastic Raman scattering is applied to p‐type semiconductor samples under the action of continuous laser illumination that produces intervalence band photoexcitation. The hydrodynamical theory of high‐frequency fluctuations in a two‐component system with interchange of particles is delivered taking into account intervalence band photoexcitation. The theory identifies the presence of an acoustic plasmon feature basing on three independent parameters — position, lineshape and dependence on concentration. In particular, an explanation of the tremendous growth of light scattering intensity with increasing hole concentration has been achieved. Forbidden (depolarized) replica of the acoustic plasmon peak are considered as a consequence of screening of magnetic force associated with electrical current. |
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| Bibliography: | ArticleID:PSSB465 ark:/67375/WNG-S0CGQ8HB-G istex:F0857E2D2FC9A1AFE32E721BFFD8D91686B6D171 |
| ISSN: | 0370-1972 1521-3951 |
| DOI: | 10.1002/1521-3951(199710)203:2<465::AID-PSSB465>3.0.CO;2-K |