Hui Hu, Jia-Lin Zhu, Jia-Jiong Xiong
Published 2000-05-30, updated 2000-09-29Version 2
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)].
Comments: 17 pages, 6 figures, revised and accepted by Phys. Rev. B (Dec. 15)
Journal: Phys. Rev. B 62, 16777 (2000)
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