Anisotropic spin Hall effect from first principles

Details Anisotropic spin Hall effect from first principles Anisotropic spin Hall effect from first principles

2010-11-11

arxiv.org/abs/1011.2714v2

Phys. Rev. Lett. 105, 246602 (2010)

Physics

Condensed Matter

Materials Science

Accepted for publication in Physical Review Letters

Scientific paper

10.1103/PhysRevLett.105.246602

We report on first principles calculations of the anisotropy of the intrinsic spin Hall conductivity (SHC) in nonmagnetic hcp metals and in antiferromagnetic Cr. For most of the metals of this study we find large anisotropies. We derive the general relation between the SHC vector and the direction of spin polarization and discuss its consequences for hcp metals. Especially, it is predicted that for systems where the SHC changes sign due to the anisotropy the spin Hall effect may be tuned such that the spin polarization is parallel either to the electric field or to the spin current.

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