期刊
PHYSICAL REVIEW LETTERS
卷 94, 期 23, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.94.236601
关键词
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Using scanning Kerr microscopy, we directly acquire two-dimensional images of spin-polarized electrons flowing laterally in bulk epilayers of nGaAs. Optical injection provides a local dc source of polarized electrons, whose subsequent drift and/or diffusion is controlled with electric, magnetic, and-in particular-strain fields. Spin precession induced by controlled uniaxial stress along the < 110 > axes demonstrates the direct k-linear spin-orbit coupling of electron spin to the shear (off diagonal) components of the strain tensor, epsilon(xy).
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