Optical and electrical spin injection and spin transport in hybrid Fe/GaAs devices

Details Optical and electrical spin injection and spin transport in hybrid Fe/GaAs devices Optical and electrical spin injection and spin transport in hybrid Fe/GaAs devices

2006-11-28

arxiv.org/abs/cond-mat/0611729v1

Journal of Applied Physics 101, 081716 (2007)

Physics

Condensed Matter

Materials Science

5 pages, 6 figs. ICPS-28 proceedings (July'06, Vienna) for J. Appl. Phys

Scientific paper

10.1063/1.2722785

We discuss methods for imaging the nonequilibrium spin polarization of electrons in Fe/GaAs spin transport devices. Both optically- and electrically-injected spin distributions are studied by scanning magneto-optical Kerr rotation microscopy. Related methods are used to demonstrate electrical spin detection of optically-injected spin polarized currents. Dynamical properties of spin transport are inferred from studies based on the Hanle effect, and the influence of strain on spin transport data in these devices is discussed.

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