Electronic and optical properties of a nanoring in the presence of external magnetic field

Optical properties of a nanoring with Winternitz–Smorodinsky confinement potential in the presence of an external magnetic field have been studied theoretically. Our results demonstrate that energy, oscillator strength and the linear, nonlinear and total absorption are strongly affected by size of the nanoring. Also, we found that magnetic field has little influence on energy difference, oscillator strength and optical absorption of the nanoring.

Graphical abstractThe total absorption coefficient as a function of the photon energy with B = 5 T, R1 = 15 nm and R2 = 35 nm for three different incident optical intensities I = 0.4, 4 and 40 MW/cm.Figure optionsDownload full-size imageDownload as PowerPoint slideHighlights► Energy difference is strongly influenced by the radius of the nanoring. ► Some interesting features occur by modulating the radius of the nanoring. ► Total absorption of nanoring strongly depends on the incident optical intensity.