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

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

Physica E27, 278 (2005) 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...

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Hauptverfasser: Gylfadottir, Sigridur Sif, Nita, Marian, Gudmundsson, Vidar, Manolescu, Andrei
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Nita, Marian
Gudmundsson, Vidar
Manolescu, Andrei
description Physica E27, 278 (2005) 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.
doi_str_mv 10.48550/arxiv.cond-mat/0402582
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title Net current generation in a 1D quantum ring at zero magnetic field
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