Electron scattering in silicene quantum dot with a time-periodic potential

¹ Department of Physics, Faculty of Sciences, University of Mohaghegh Ardabili - P.O. Box 179, Ardabil, Iran
² Nanoscience and Nanotechnology Research Center, University of Mohaghegh Ardabili - Ardabil, Iran

^(a) f_sattari@uma.ac.ir (corresponding author)

Received: 14 June 2021
Accepted: 16 August 2021

Abstract

We investigate the scattering problem for electrons in a circular silicene quantum dot with a time-periodic potential and intrinsic spin-orbit coupling. Our results demonstrate that the scattering coefficient depends on the radius of the quantum dot (R), the amplitude , and the frequency of the time-periodic potential as well as the order of the sideband. For the zero bias, unlike the finite bias, the scattering coefficient is independent of the sign of n for the n-th sideband. We also find that the scattering increases with R. Also, for smaller values of R, there is not any scattering in the silicene quantum dot for both the zero bias and the finite bias. For n > 1, the scattering is significant only for the small frequency values. Interestingly, a circular silicene quantum dot can temporarily trap electrons.