72 citations · 2.2k across the 161 of their papers we have counts for
3 papers · 1 filter
Non-adiabatic Current Excitation in Quantum Rings
S. S. Gylfadottir, V. Gudmundsson, C. S. Tang +1
We investigate the difference in the response of a one-dimensional semiconductor quantum ring and a finite-width ring to a strong and short-lived time-dependent perturbation in the…
Impurity and spin effects on the magneto-spectroscopy of a THz-modulated nanostructure
Vidar Gudmundsson, Chi-Shung Tang, Andrei Manolescu
We present a grid-free DFT model appropriate to explore the time evolution of electronic states in a semiconductor nanostructure. The model can be used to investigate both the line…
Non-adiabatic current generation in a finite width semiconductor ring
Vidar Gudmundsson, Chi-Shung Tang, Andrei Manolescu
We consider a model of a semiconductor quantum ring of finite width in a constant perpendicular magnetic field. We show how a current of the same order as the persistent current ca…