Shake-up Processes in Intersubband Magneto-photoabsorption of a Two-Dimensional Electron Gas

Details Shake-up Processes in Intersubband Magneto-photoabsorption of a Two-Dimensional Electron Gas Shake-up Processes in Intersubband Magneto-photoabsorption of a Two-Dimensional Electron Gas

2003-07-16

arxiv.org/abs/cond-mat/0307370v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 3 figures; Proceedings NGS-11 (June 2003, Buffalo, NY, USA)

Scientific paper

10.1016/j.physe.2003.08.050

I theoretically study shake-up processes in photoabsorption of an interacting low-density two-dimensional electron gas (2DEG) in magnetic fields. Such processes, in which an incident photon creates an electron-hole pair and simultaneously excites one electron to one of the higher Landau levels, were observed experimentally [D.R. Yakovlev et al., Phys. Rev. Lett. 79, 3974 (1997)] and were called combined exciton-cyclotron resonance (ExCR). The recently developed theory of ExCR [A.B. Dzyubenko, Phys. Rev. B 64, 241101 (2001)] allows for a consistent treatment of the Coulomb correlations, establishes the exact ExCR selection rules, and predicts the high field features of ExCR. In this work, I generalize the existing theory of high-field ExCR in the 2DEG to the case when the hole is excited to higher hole Landau levels.

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