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arXiv · 1701.08773

Omnidirectional spin Hall effect in a Weyl spin-orbit coupled atomic gas

J. Armaitis·J. Ruseckas·G. Juzeliūnas
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Abstract

We show that in the presence of a three-dimensional (Weyl) spin-orbit coupling, a transverse spin current is generated in response to either a constant spin-independent force or a time-dependent Zeeman field in an arbitrary direction. This effect is the non-Abelian counterpart of the universal intrinsic spin Hall effect characteristic to the two-dimensional Rashba spin-orbit coupling. We quantify the strength of such an omnidirectional spin Hall effect by calculating the corresponding conductivity for fermions and non-condensed bosons. The absence of any kind of disorder in ultracold-atom systems makes the observation of this effect viable.

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J. Armaitis, J. Ruseckas, G. Juzeliūnas. 2017-04-02. Omnidirectional spin Hall effect in a Weyl spin-orbit coupled atomic gas. https://doi.org/10.1103/physreva.95.033635

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