Electro-optical properties of rectangle-shaped crater quantum rings under orthogonal electric and magnetic fields

The electronic and optical properties of an electron in realistic rectangle-shaped crater quantum rings under orthogonal electric and magnetic fields have been theoretically studied. The Schrödinger wave equation was solved using the finite element method within the effective mass approximation. A Stark effect with anomalous oscillatory behavior was observed for electric field strengths less than 10 kV/cm. The threading magnetic field leads to the formation of damped oscillations in the absorption coefficient peaks, which are closely related both to the Aharonov-Bohm oscillations and to a shift of the absorption peaks towards blue or red, depending on the dimensions and morphology of the central crater. Our model is sufficiently flexible such that several results appear as particular cases of the quantum ring with a rectangular central crater. • Rectangle-shaped crater quantum rings. • The energy structure of a single electron in a quantum ring with rectangle-shaped central crater. • Electric and magnetic field effects on a single electron in a quantum ring with rectangle shape central crater. • Optical response of an electron in quantum ring with rectangle-shaped crater under orthogonal electro-magnetic fields.