Aharonov-Bohm Effect in Concentric Quantum Double Rings

Details Aharonov-Bohm Effect in Concentric Quantum Double Rings Aharonov-Bohm Effect in Concentric Quantum Double Rings

2006-11-06

arxiv.org/abs/cond-mat/0611132v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 5 figures

Scientific paper

10.1016/j.ssc.2007.07.020

We propose a theoretical model to study the single-electron spectra of the concentric quantum double ring fabricated lately by self-assembled technique. Exact diagonalization method is employed to examine the Aharonov-Bohm effect in the concentric double ring. It is found the appearance of the AB oscillation in total energy depends on the strength of the screened potential. Variations of the energy spectra with the presence of coulomb impurities located at inner or outer ring are also investigated.

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