Abstract
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.
Original language | English (US) |
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Article number | 081716 |
Journal | Journal of Applied Physics |
Volume | 101 |
Issue number | 8 |
DOIs | |
State | Published - 2007 |
Bibliographical note
Funding Information:This work was supported by the DARPA SpinS and Los Alamos LDRD programs, the NSF MRSEC program under Grant No. DMR 02-12302, the Office of Naval Research, and the Minnesota Nanofabrication Center, which is supported by the NSF NNIN program.