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Internal transitions of negatively charged magnetoexcitons in quantum dots

Ricardo Perez·Augusto Gonzalez·Jorge Mahecha
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Abstract

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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Ricardo Perez, Augusto Gonzalez, Jorge Mahecha. 2003-08-15. Internal transitions of negatively charged magnetoexcitons in quantum dots. https://doi.org/10.1088/0953-8984%2F15%2F45%2F007

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