Far-infrared absorption of self-assembled semiconductor rings

Details Far-infrared absorption of self-assembled semiconductor rings Far-infrared absorption of self-assembled semiconductor rings

2004-12-21

arxiv.org/abs/cond-mat/0412552v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

7 pages, 7 figures, to be published in Collection of Czechoslovak Chemical Communications

Scientific paper

We report a theoretical description of far-infrared spectroscopy experiments on self-assembled quantum rings in a magnetic field [A. Lorke et al., Phys. Rev. Lett. 84, 2223 (2000)] which, for the first time, accounts for the full set of experimental resonances. In our calculations we use a 3D effective-mass model with a realistic finite step-like confinement potential, including strain and Coulomb effects. We assume a bimodal distribution of ring sizes.

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