Internal transitions of negatively charged magnetoexcitons in quantum dots

Details Internal transitions of negatively charged magnetoexcitons in quantum dots Internal transitions of negatively charged magnetoexcitons in quantum dots

2003-08-15

arxiv.org/abs/cond-mat/0308303v1

J. Phys.: Condens. Matter 15 (2003) 7681 - 7686

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Presented as a poster in the Third Stig Lundqvist Conference on Advancing Frontiers of Condensed Matter Physics: Fundamental I

Scientific paper

10.1088/0953-8984/15/45/007

We report calculations of oscillator strengths for the far infrared absorption of light by the excitonic complexes Xn- (the excess charge, n, ranging from one to four) confined in quantum dots. The magnetic field is varied in an interval which corresponds to ``filling factors'' between 2 and 3/5. Electron-hole interaction effects are seen in the deviations of the peak positions from the Kohn lines, and in the spreading of the oscillator strengths over a few final states. Transition densities are used as an additional tool to characterize the absorption peaks.

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