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

Autor:	Armaitis, J., Ruseckas, J., Juzeliūnas, G.
Rok vydání:	2017
Předmět:	Condensed Matter - Quantum Gases Physics - Atomic Physics Quantum Physics
Zdroj:	Phys. Rev. A 95, 033635 (2017)
Druh dokumentu:	Working Paper
DOI:	10.1103/PhysRevA.95.033635
Popis:	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. Comment: Physical Review A Editors' Suggestion
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1701.08773 Zobrazit plný text záznamu View this record from Arxiv