Analysis of the eigenstates of a semiconductor hydrogenic washer-shaped structurally deformed nanoring: External crossed fields and stark-like effects

The eigenstates of a hydrogenic complex confined in a washer-shaped quantum ring with lateral position-controllable protuberances with a Gaussian aspect under the presence of crossed magnetic and electric probes were calculated. The size and position of the protuberances affect significantly the degree of the electron localization observable in Aharonov-Bohm and Stark-like patterns. The influence of the size of the protuberances, off-centered impurities, and in-plane electric fields on the localization of states was studied in detail. Finally, based on the electron mobility, a mechanism to detect narrow intervals of electric fields thorough the measurement of nanoscopic loop-currents as a function of the non-uniform washer-shaped quantum ring morphology was studied.