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

J. Appl. Phys. 101, 081716 (2007); doi:10.1063/1.2722785

Published 27 April 2007

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S. A. Crooker and M. Furis
National High Magnetic Field Laboratory, Los Alamos National Laboratory, Los Alamos, New Mexico 87545

X. Lou and P. A. Crowell
School of Physics and Astronomy, University of Minnesota, 116 Church Street SE, Minneapolis, Minnesota 55455

D. L. Smith
Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545

C. Adelmann and C. J. Palmstrøm
Department of Chemical Engineering and Material Science, University of Minnesota, 421 Washington Avenue SE, Minneapolis, Minnesota 55455
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. ©2007 American Institute of Physics
History: Received 29 September 2006; accepted 29 November 2006; published 27 April 2007
Permalink: http://link.aip.org/link/?JAPIAU/101/081716/1
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KEYWORDS and PACS

Keywords
PACS
  • 85.75.-d
    Magnetoelectronics; spintronics: devices exploiting spin polarized transport or integrated magnetic fields
  • YEAR: 2007

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PUBLICATION DATA

ISSN:
0021-8979 (print)   1089-7550 (online)
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