Energy levels and far-infrared spectroscopy for two electrons in a semiconductor nanoring

Details Energy levels and far-infrared spectroscopy for two electrons in a semiconductor nanoring Energy levels and far-infrared spectroscopy for two electrons in a semiconductor nanoring

2000-05-30

arxiv.org/abs/cond-mat/0005520v2

Phys. Rev. B 62, 16777 (2000)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

17 pages, 6 figures, revised and accepted by Phys. Rev. B (Dec. 15)

Scientific paper

10.1103/PhysRevB.62.16777

The effects of electron-electron interaction of a two-electron nanoring on the energy levels and far-infrared (FIR) spectroscopy have been investigated based on a model calculation which is performed within the exactly numerical diagonalization. It is found that the interaction changes the energy spectra dramatically, and also shows significant influence on the FIR spectroscopy. The crossings between the lowest spin-singlet and triplet states induced by the coulomb interaction are clearly revealed. Our results are related to the experiment recently carried out by A. Lorke et al. [Phys. Rev. Lett. 84, 2223 (2000)].

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