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Is the magnetic field necessary for the Aharonov-Bohm effect in mesoscopics?

I. D. Vagner·A. S. Rozhavsky·P. Wyder·A. Yu. Zyuzin
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Abstract

A new class of topological mesoscopic phenomena in absence of external magnetic field (meso-nucleo-spinics)is predicted, which is based on combined action of the nonequilibrium nuclear spin population and charge carriers spin-orbit interaction . As an example, we show that Aharonov-Bohm like oscillations of the persistent current in GaAs/AlGaAs based mesoscopic rings may exist, in the absence of the external magnetic field, provided that a topologically nontrivial strongly nonequilibrium nuclear spin population is created. This phenomenon is due to the breaking, via the spin-orbit coupling, of the clock wise - anti clock wise symmetry of the charge carriers momentum, which results in the oscillatory in time persistent current.

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I. D. Vagner, A. S. Rozhavsky, P. Wyder, A. Yu. Zyuzin. 1997-12-04. Is the magnetic field necessary for the Aharonov-Bohm effect in mesoscopics?. https://doi.org/10.1103/physrevlett.80.2417

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