Drift transport of spin-polarized electrons in GaAs

H. Sanada; I. Arata; Y. Ohno; K. Ohtani; Z. Chen; K. Kayanuma; Y. Oka; F. Matsukura; H. Ohno

Drift transport of spin-polarized electrons in GaAs

H. Sanada, I. Arata, Y. Ohno, K. Ohtani, Z. Chen, K. Kayanuma, Y. Oka, F. Matsukura, H. Ohno

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Abstract

We studied the transport properties of spin-polarized conduction electrons in GaAs by time-resolved photoinjection and photoluminescence polarization measurements. Under an electric field of a few kV/cm, the degree of the spin polarization considerably decreases during drift transport over the distance shorter than 4 μm. Spin relaxation by D'yakonov-Perel' mechanism is suggested to be the cause of such a rapid spin depolarization for hot electrons under a moderate electric field at low temperatures.

Original language	English
Pages (from-to)	217-219
Number of pages	3
Journal	Journal of Superconductivity and Novel Magnetism
Volume	16
Issue number	1
Publication status	Published - 2003

Keywords

Spin dynamics
spin relaxation
Spin transport
Time-resolved optical spectroscopy

Cite this

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title = "Drift transport of spin-polarized electrons in GaAs",

abstract = "We studied the transport properties of spin-polarized conduction electrons in GaAs by time-resolved photoinjection and photoluminescence polarization measurements. Under an electric field of a few kV/cm, the degree of the spin polarization considerably decreases during drift transport over the distance shorter than 4 μm. Spin relaxation by D'yakonov-Perel' mechanism is suggested to be the cause of such a rapid spin depolarization for hot electrons under a moderate electric field at low temperatures.",

keywords = "Spin dynamics, spin relaxation, Spin transport, Time-resolved optical spectroscopy",

author = "H. Sanada and I. Arata and Y. Ohno and K. Ohtani and Z. Chen and K. Kayanuma and Y. Oka and F. Matsukura and H. Ohno",

note = "Funding Information: This work was partly supported by a Grant-in-Aid (Nos. 12305001, 14076203, and 14205002) from JSPS, and the IT-Program of Research Revolution 2002 (RR2002) from MEXT.",

year = "2003",

language = "English",

volume = "16",

pages = "217--219",

journal = "Journal of Superconductivity and Novel Magnetism",

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TY - JOUR

T1 - Drift transport of spin-polarized electrons in GaAs

AU - Sanada, H.

AU - Arata, I.

AU - Ohno, Y.

AU - Ohtani, K.

AU - Chen, Z.

AU - Kayanuma, K.

AU - Oka, Y.

AU - Matsukura, F.

AU - Ohno, H.

N1 - Funding Information: This work was partly supported by a Grant-in-Aid (Nos. 12305001, 14076203, and 14205002) from JSPS, and the IT-Program of Research Revolution 2002 (RR2002) from MEXT.

PY - 2003

Y1 - 2003

N2 - We studied the transport properties of spin-polarized conduction electrons in GaAs by time-resolved photoinjection and photoluminescence polarization measurements. Under an electric field of a few kV/cm, the degree of the spin polarization considerably decreases during drift transport over the distance shorter than 4 μm. Spin relaxation by D'yakonov-Perel' mechanism is suggested to be the cause of such a rapid spin depolarization for hot electrons under a moderate electric field at low temperatures.

AB - We studied the transport properties of spin-polarized conduction electrons in GaAs by time-resolved photoinjection and photoluminescence polarization measurements. Under an electric field of a few kV/cm, the degree of the spin polarization considerably decreases during drift transport over the distance shorter than 4 μm. Spin relaxation by D'yakonov-Perel' mechanism is suggested to be the cause of such a rapid spin depolarization for hot electrons under a moderate electric field at low temperatures.

KW - Spin dynamics

KW - spin relaxation

KW - Spin transport

KW - Time-resolved optical spectroscopy

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M3 - Article

AN - SCOPUS:3543090423

SN - 1557-1939

VL - 16

SP - 217

EP - 219

JO - Journal of Superconductivity and Novel Magnetism

JF - Journal of Superconductivity and Novel Magnetism

IS - 1

ER -

Drift transport of spin-polarized electrons in GaAs

Abstract

Keywords

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