61 citations · 1.3k across the 92 of their papers we have counts for
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Analysis on the imaging properties of a left-handed material slab
Pi-Gang Luan, Hung-Da Chien, Chii-Chang Chen +1
We investigate in this paper the imaging properties of an absorptive left-handed material (LHM) slab. For a line source, a geometric explanation to the reason of the thickness limi…
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…
Lewis-Riesenfeld approach to the solutions of Schrodinger equation in the presence of the presence of a time-dependent linear potential
Pi-Gang Luan, Chi-Shung Tang
We reexamine the general solution of a Schrödinger equation in the presence of a time-dependent linear potential in configuration space based on the Lewis-Riesenfeld framework. For…
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…