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Net current generation in a 1D quantum ring at zero magnetic field

Sigridur Sif Gylfadottir·Marian Nita·Vidar Gudmundsson·Andrei Manolescu
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Abstract

We study a non-adiabatic excitation of an electron system in a 1D quantum ring radiated by a short THz pulse. The response of two models, a continuous and discrete, is explored. By introducing a spatial asymmetry in the external perturbation a net current can be generated in the ring at a zero magnetic field. Effect of impurities and ratchets are investigated in combination with symmetric and asymmetric external excitation.

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Sigridur Sif Gylfadottir, Marian Nita, Vidar Gudmundsson, Andrei Manolescu. 2004-02-24. Net current generation in a 1D quantum ring at zero magnetic field. https://doi.org/10.1016/j.physe.2004.12.002

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