Unbalanced spin accumulation induced by spin Hall effect

Seon Gu Huh; Hyun Cheol Koo; Jonghwa Eom; Hyunjung Yi; Joonyeon Chang; Suk Hee Han

doi:10.1016/j.jmmm.2006.10.1013

Unbalanced spin accumulation induced by spin Hall effect

Seon Gu Huh, Hyun Cheol Koo, Jonghwa Eom, Hyunjung Yi, Joonyeon Chang, Suk Hee Han

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

2 Citations (Scopus)

Abstract

Moving electrons of different spins experience skew scattering in a two-dimensional electron gas layer and the electron deviates different direction due to the spin-dependent deflection. If spin is randomly oriented, the amount of skew scattering on both sides will be same and the Hall voltage will read zero. In this experiment, the carrier concentrations of spin up and down are unbalanced because the spin is aligned by stray field from the ferromagnet. Therefore, the voltage probe reads charge accumulation asymmetry. Spin Hall voltage is functions of the spin alignment direction and the amount of spin polarization.

Original language	English
Pages (from-to)	e705-e707
Journal	Journal of Magnetism and Magnetic Materials
Volume	310
Issue number	2 SUPPL. PART 3
DOIs	https://doi.org/10.1016/j.jmmm.2006.10.1013
Publication status	Published - 2007 Mar
Externally published	Yes

Keywords

Skew scattering
Spin Hall effect
Spin accumulation
Spin-dependent deflection
Stray field

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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title = "Unbalanced spin accumulation induced by spin Hall effect",

abstract = "Moving electrons of different spins experience skew scattering in a two-dimensional electron gas layer and the electron deviates different direction due to the spin-dependent deflection. If spin is randomly oriented, the amount of skew scattering on both sides will be same and the Hall voltage will read zero. In this experiment, the carrier concentrations of spin up and down are unbalanced because the spin is aligned by stray field from the ferromagnet. Therefore, the voltage probe reads charge accumulation asymmetry. Spin Hall voltage is functions of the spin alignment direction and the amount of spin polarization.",

keywords = "Skew scattering, Spin Hall effect, Spin accumulation, Spin-dependent deflection, Stray field",

author = "Huh, {Seon Gu} and Koo, {Hyun Cheol} and Jonghwa Eom and Hyunjung Yi and Joonyeon Chang and Han, {Suk Hee}",

year = "2007",

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doi = "10.1016/j.jmmm.2006.10.1013",

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T1 - Unbalanced spin accumulation induced by spin Hall effect

AU - Huh, Seon Gu

AU - Koo, Hyun Cheol

AU - Eom, Jonghwa

AU - Yi, Hyunjung

AU - Chang, Joonyeon

AU - Han, Suk Hee

PY - 2007/3

Y1 - 2007/3

N2 - Moving electrons of different spins experience skew scattering in a two-dimensional electron gas layer and the electron deviates different direction due to the spin-dependent deflection. If spin is randomly oriented, the amount of skew scattering on both sides will be same and the Hall voltage will read zero. In this experiment, the carrier concentrations of spin up and down are unbalanced because the spin is aligned by stray field from the ferromagnet. Therefore, the voltage probe reads charge accumulation asymmetry. Spin Hall voltage is functions of the spin alignment direction and the amount of spin polarization.

AB - Moving electrons of different spins experience skew scattering in a two-dimensional electron gas layer and the electron deviates different direction due to the spin-dependent deflection. If spin is randomly oriented, the amount of skew scattering on both sides will be same and the Hall voltage will read zero. In this experiment, the carrier concentrations of spin up and down are unbalanced because the spin is aligned by stray field from the ferromagnet. Therefore, the voltage probe reads charge accumulation asymmetry. Spin Hall voltage is functions of the spin alignment direction and the amount of spin polarization.

KW - Skew scattering

KW - Spin Hall effect

KW - Spin accumulation

KW - Spin-dependent deflection

KW - Stray field

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JO - Journal of Magnetism and Magnetic Materials

JF - Journal of Magnetism and Magnetic Materials

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