Abstract
The influence of lateral asymmetry on the electronic structure and optical transitions inelliptical strained InAs nanorings is analyzed in the presence of a perpendicular magneticfield. Two-dimensional rings are assumed to have elliptical inner and outer boundariesoriented in mutually orthogonal directions. The influence of the eccentricity of the ring onthe energy levels is analyzed. For large eccentricity of the ring, we do not find anyAharonov–Bohm effect, in contrast to circular rings. Rather, the single-particle states ofthe electrons and the holes are localized as in two laterally coupled quantum dotsformed in the lobes of the nanoring. Our work indicates that the control of shape isimportant for the existence of the Aharonov–Bohm effect in semiconductor nanorings.
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