Article Title

Generating Spin Currents in Semiconductors with the Spin Hall Effect

Type of Work

Article

Date

9-1-2006

Journal Title

Physical Review Letters

Journal ISSN

0031-9007

Journal Volume

97

Journal Issue

9

First Page

096605

DOI

10.1103/PhysRevLett.97.096605

Abstract

We investigate electrically induced spin currents generated by the spin Hall effect in GaAs structures that distinguish edge effects from spin transport. Using Kerr rotation microscopy to image the spin polarization, we demonstrate that the observed spin accumulation is due to a transverse bulk electron spin current, which can drive spin polarization nearly 40 microns into a region in which there is minimal electric field. Using a model that incorporates the effects of spin drift, we determine the transverse spin drift velocity from the magnetic field dependence of the spin polarization.

Hamilton Areas of Study

Physics

Share

COinS