Coupled plasmon-phonon modes in a two-dimensional electron gas in the presence of Rashba effect
arXiv:cond-mat/0304257 · doi:10.1088/0953-8984/15/19/324
Abstract
Elementary electronic excitation is studied theoretically for a 2DEG in the presence of spin orbit (SO) interaction induced by Rashba effect. In such a system, coupled plasmon-phonon excitation can be achieved via intra- and inter-SO electronic transitions. As a result, six branches of the coupled plasmon-phonon oscillations can be observed. The interesting features of these excitation modes are analyzed.
12 pages, 4 figures