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

Gylfadottir, Sigridur Sif; Nita, Marian; Gudmundsson, Vidar; Manolescu, Andrei

doi:10.1016/j.physe.2004.12.002

arXiv 2004-02-24 DOI 10.1016/j.physe.2004.12.002 0 views

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

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

Mesoscale and Nanoscale Physics

Original · EN

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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