Influence of Geometric-Confinement Parameters on the Electronic Properties of Quantum Ring

Physical understanding of the electronic properties of nanostructures allows us to fabricate the electronic elements which are widely applied as components of the new generation of electronic and photonic devices. The potential application of such elements in industry stimulates rapid development in nanotechnology and gives us motivation for preparing and studying a new class of confined structures. One of them are quantum rings that are very interesting objects due to potential implementations in optical devices or quantum computing based on a solid state environment. Therefore, the quantum rings have been extensively studied during the last decade both experimentally [1–6] and theoretically [7–10]. Many theoretical studies have investigated various aspects of the one-dimensional quantum rings (for a recent review, see [11]) but the real experiments performed on the semiconductor quantum rings clearly show that these structures possess a finite width in the plane perpendicular to the ring axis [3]. These experimental results allowed one to introduce various theoretical models of confinement potentials for ∗corresponding author; e-mail: [email protected]