Physics – Condensed Matter – Materials Science
Scientific paper
2009-05-18
Phys. Rev. B 81, 121304(R) (2010)
Physics
Condensed Matter
Materials Science
4 pages, 4 figures
Scientific paper
10.1103/PhysRevB.81.121304
We show that a two-dimensional spin-orbit-coupled system in the presence of a charge/spin-density wave with a wave-vector perpendicular to an applied electric field supports bulk manifestations of the direct/inverse spin-Hall effect. We develop a theory of this phenomenon in the framework of the spin diffusion equation formalism and show that, due to the inhomogeneity created by a spin-grating, an anomalous bulk charge-density wave is induced away from sample boundaries. The optimal conditions for the observation of the effect are determined. The main experimental manifestation of the bulk spin-Hall effect, the induced charge/spin-density-wave, is characterized by a pi/2-phase shift relative to the initial non-homogeneous spin/charge-polarization profile and has a non-monotonic time-varying amplitude.
Anderson Brandon
Galitski Victor
Stanescu Tudor D.
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