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arXiv · 1709.00426

Spin Hall mode in a trapped thermal Rashba gas

J. Armaitis·J. Ruseckas·H. T. C. Stoof·R. A. Duine
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Abstract

We theoretically investigate a two-dimensional harmonically-trapped gas of identical atoms with Rashba spin-orbit coupling and no interatomic interactions. In analogy with the spin Hall effect in uniform space, the gas exhibits a spin Hall mode. In particular, in response to a displacement of the center-of-mass of the system, spin-dipole moment oscillations occur. We determine the properties of these oscillations exactly, and find that their amplitude strongly depends on the spin-orbit coupling strength and the quantum statistics of the particles.

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J. Armaitis, J. Ruseckas, H. T. C. Stoof, R. A. Duine. 2017-09-01. Spin Hall mode in a trapped thermal Rashba gas. https://doi.org/10.1103/physreva.96.053625

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