Luminescence from highly excited nanorings: Luttinger liquid description

Details Luminescence from highly excited nanorings: Luttinger liquid description Luminescence from highly excited nanorings: Luttinger liquid description

2001-01-04

arxiv.org/abs/cond-mat/0101052v4

Physics

Condensed Matter

10 pages including 2 figures

Scientific paper

10.1103/PhysRevB.64.115317

We study theoretically the luminescence from quantum dots of a ring geometry. For high excitation intensities, photoexcited electrons and holes form Fermi seas. Close to the emission threshold, the single-particle spectral lines aquire weak many-body satellites. However, away from the threshold, the discrete luminescence spectrum is completely dominated by many-body transitions. We employ the Luttinger liquid approach to exactly calculate the intensities of all many-body spectral lines. We find that the transition from single-particle to many-body structure of the emission spectrum is governed by a single parameter and that the distribution of peaks away from the threshold is universal.

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