The plasma oscillations in a two-dimensional electron-hole liquid under influence Rashba spin-orbit coupling
The plasma oscillations of the two-dimensional electron-hole system in the presence of a Rashba spin-orbit coupling are studied. Only the intra-Landau level excitations are taken into account when the electrons and holes are situated on their lowest Landau levels, the filling factor \(v^{2}\) being...
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Veröffentlicht in: | arXiv.org 2013-09 |
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Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | The plasma oscillations of the two-dimensional electron-hole system in the presence of a Rashba spin-orbit coupling are studied. Only the intra-Landau level excitations are taken into account when the electrons and holes are situated on their lowest Landau levels, the filling factor \(v^{2}\) being less than 1. The ground state of the two-dimensional electron-hole system is supposed to be the electron-hole liquid. The dispersion relations for the optical and acoustical plasmon modes were obtained. The acoustical plasmon branch has a linear dispersion law in the range of small wave vectors and monotonically increases with saturation at higher values of wave vectors. The optical plasmon branch has a quadratic dependence in the range of long wavelength and a monotonic increasing with saturation as in the case of acoustical branch. |
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ISSN: | 2331-8422 |
DOI: | 10.48550/arxiv.1309.0716 |