Drift and diffusion of spins generated by the spin Hall effect

N. P. Stern; D. W. Steuerman; S. MacK; A. C. Gossard; D. D. Awschalom

doi:10.1063/1.2768633

Drift and diffusion of spins generated by the spin Hall effect

N. P. Stern^*, D. W. Steuerman, S. MacK, A. C. Gossard, D. D. Awschalom

^*Corresponding author for this work

Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

24 Scopus citations

Abstract

Electrically generated spin accumulation due to the spin Hall effect is imaged in n-GaAs channels using Kerr rotation microscopy, focusing on its spatial distribution and time-averaged behavior in a magnetic field. Spatially resolved imaging reveals that spin accumulation observed in transverse arms develops due to the longitudinal drift of spin polarization produced at the sample boundaries. One- and two-dimensional drift-diffusion modeling is used to explain these features, providing a more complete understanding of observations of spin accumulation and the spin Hall effect.

Original language	English (US)
Article number	062109
Journal	Applied Physics Letters
Volume	91
Issue number	6
DOIs	https://doi.org/10.1063/1.2768633
State	Published - 2007

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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@article{961017a9b8f44e4fb50f59227a4933bc,

title = "Drift and diffusion of spins generated by the spin Hall effect",

abstract = "Electrically generated spin accumulation due to the spin Hall effect is imaged in n-GaAs channels using Kerr rotation microscopy, focusing on its spatial distribution and time-averaged behavior in a magnetic field. Spatially resolved imaging reveals that spin accumulation observed in transverse arms develops due to the longitudinal drift of spin polarization produced at the sample boundaries. One- and two-dimensional drift-diffusion modeling is used to explain these features, providing a more complete understanding of observations of spin accumulation and the spin Hall effect.",

author = "Stern, {N. P.} and Steuerman, {D. W.} and S. MacK and Gossard, {A. C.} and Awschalom, {D. D.}",

note = "Funding Information: The authors thank NSF and ONR for financial support, J. Heron for assistance with transport measurements, and R. C. Myers for helpful discussions. One of the authors (N.P.S.) acknowledges the support of the Fannie and John Hertz Foundation, and another author (S.M.) acknowledges the support of the American Society for Engineering Education. ",

year = "2007",

doi = "10.1063/1.2768633",

language = "English (US)",

volume = "91",

journal = "Applied Physics Letters",

issn = "0003-6951",

publisher = "American Institute of Physics Publising LLC",

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T1 - Drift and diffusion of spins generated by the spin Hall effect

AU - Stern, N. P.

AU - Steuerman, D. W.

AU - MacK, S.

AU - Gossard, A. C.

AU - Awschalom, D. D.

N1 - Funding Information: The authors thank NSF and ONR for financial support, J. Heron for assistance with transport measurements, and R. C. Myers for helpful discussions. One of the authors (N.P.S.) acknowledges the support of the Fannie and John Hertz Foundation, and another author (S.M.) acknowledges the support of the American Society for Engineering Education.

PY - 2007

Y1 - 2007

N2 - Electrically generated spin accumulation due to the spin Hall effect is imaged in n-GaAs channels using Kerr rotation microscopy, focusing on its spatial distribution and time-averaged behavior in a magnetic field. Spatially resolved imaging reveals that spin accumulation observed in transverse arms develops due to the longitudinal drift of spin polarization produced at the sample boundaries. One- and two-dimensional drift-diffusion modeling is used to explain these features, providing a more complete understanding of observations of spin accumulation and the spin Hall effect.

AB - Electrically generated spin accumulation due to the spin Hall effect is imaged in n-GaAs channels using Kerr rotation microscopy, focusing on its spatial distribution and time-averaged behavior in a magnetic field. Spatially resolved imaging reveals that spin accumulation observed in transverse arms develops due to the longitudinal drift of spin polarization produced at the sample boundaries. One- and two-dimensional drift-diffusion modeling is used to explain these features, providing a more complete understanding of observations of spin accumulation and the spin Hall effect.

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DO - 10.1063/1.2768633

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JF - Applied Physics Letters

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ER -

Drift and diffusion of spins generated by the spin Hall effect

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