Aharonov-Bohm effect for an exciton in a finite width nano-ring
arXiv:cond-mat/0505151 · doi:10.1103/PhysRevB.72.075343
Abstract
We study the Aharonov-Bohm effect for an exciton on a nano-ring using a 2D attractive fermionic Hubbard model. We extend previous results obtained for a 1D ring in which only azimuthal motion is considered, to a more general case of 2D annular lattices. In general, we show that the existence of the localization effect, increased by the nonlinearity, makes the phenomenon in the 2D system similar to the 1D case. However, the introduction of radial motion introduces extra frequencies, different from the original isolated frequency corresponding to the excitonic Aharonov-Bohm oscillations. If the circumference of the system becomes large enough, the Aharonov-Bohm effect is suppressed.
arXiv comment28 pages, 12 figures
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- Finite Size Effects on the Optical Transitions in Quantum Rings under a Magnetic Field
- Non-circular semiconductor nanorings of type I and II: Emission kinetics in the exciton Aharonov-Bohm effect
- Optical Activity from the Exciton Aharonov-Bohm Effect: A Floquet Engineering Approach
- Eccentricity effects on the quantum confinement in double quantum rings