Spin-Dephasing Anisotropy for Electrons in a Diffusive Quasi-1D GaAs Wire

J. Liu; T. Last; E. J. Koop; S. Denega; B. J. van Wees; C. H. van der Wal

doi:10.1007/s10948-009-0525-2

Spin-Dephasing Anisotropy for Electrons in a Diffusive Quasi-1D GaAs Wire

J. Liu, T. Last^*, E. J. Koop, S. Denega, B. J. van Wees, C. H. van der Wal

^*Corresponding author for this work

Zernike Institute for Advanced Materials

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Abstract

We present a numerical study of dephasing of electron spin ensembles in a diffusive quasi-one-dimensional GaAs wire due to the D'yakonov-Perel' spin-dephasing mechanism. For widths of the wire below the spin precession length and for equal strength of Rashba and linear Dresselhaus spin-orbit fields a strong suppression of spin-dephasing is found. This suppression of spin-dephasing shows a strong dependence on the wire orientation with respect to the crystal lattice. The relevance for realistic cases is evaluated by studying how this effect degrades for deviating strength of Rashba and linear Dresselhaus fields, and with the inclusion of the cubic Dresselhaus term.

Original language	English
Pages (from-to)	11-15
Number of pages	5
Journal	Journal of Superconductivity and Novel Magnetism
Volume	23
Issue number	1
DOIs	https://doi.org/10.1007/s10948-009-0525-2
Publication status	Published - Jan-2010
Event	5th International Conference on Physics and Applications of Spin-Related Phenomena in Semiconductors - , Brazil Duration: 3-Aug-2008 → 6-Aug-2008

Keywords

Semiconductor spintronics
Two-dimensional electron gas
Spin-orbit coupling
Spin relaxation
RELAXATION

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Spin-Dephasing Anisotropy for Electrons in a Diffusive Quasi-1D GaAs WireFinal publisher's version, 391 KBLicence: CC BY-NC

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title = "Spin-Dephasing Anisotropy for Electrons in a Diffusive Quasi-1D GaAs Wire",

abstract = "We present a numerical study of dephasing of electron spin ensembles in a diffusive quasi-one-dimensional GaAs wire due to the D'yakonov-Perel' spin-dephasing mechanism. For widths of the wire below the spin precession length and for equal strength of Rashba and linear Dresselhaus spin-orbit fields a strong suppression of spin-dephasing is found. This suppression of spin-dephasing shows a strong dependence on the wire orientation with respect to the crystal lattice. The relevance for realistic cases is evaluated by studying how this effect degrades for deviating strength of Rashba and linear Dresselhaus fields, and with the inclusion of the cubic Dresselhaus term.",

keywords = "Semiconductor spintronics, Two-dimensional electron gas, Spin-orbit coupling, Spin relaxation, RELAXATION",

author = "J. Liu and T. Last and Koop, {E. J.} and S. Denega and {van Wees}, {B. J.} and {van der Wal}, {C. H.}",

year = "2010",

month = jan,

doi = "10.1007/s10948-009-0525-2",

language = "English",

volume = "23",

pages = "11--15",

journal = "Journal of Superconductivity and Novel Magnetism",

issn = "1557-1939",

publisher = "Springer",

number = "1",

note = "5th International Conference on Physics and Applications of Spin-Related Phenomena in Semiconductors ; Conference date: 03-08-2008 Through 06-08-2008",

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TY - JOUR

T1 - Spin-Dephasing Anisotropy for Electrons in a Diffusive Quasi-1D GaAs Wire

AU - Liu, J.

AU - Last, T.

AU - Koop, E. J.

AU - Denega, S.

AU - van Wees, B. J.

AU - van der Wal, C. H.

PY - 2010/1

Y1 - 2010/1

N2 - We present a numerical study of dephasing of electron spin ensembles in a diffusive quasi-one-dimensional GaAs wire due to the D'yakonov-Perel' spin-dephasing mechanism. For widths of the wire below the spin precession length and for equal strength of Rashba and linear Dresselhaus spin-orbit fields a strong suppression of spin-dephasing is found. This suppression of spin-dephasing shows a strong dependence on the wire orientation with respect to the crystal lattice. The relevance for realistic cases is evaluated by studying how this effect degrades for deviating strength of Rashba and linear Dresselhaus fields, and with the inclusion of the cubic Dresselhaus term.

AB - We present a numerical study of dephasing of electron spin ensembles in a diffusive quasi-one-dimensional GaAs wire due to the D'yakonov-Perel' spin-dephasing mechanism. For widths of the wire below the spin precession length and for equal strength of Rashba and linear Dresselhaus spin-orbit fields a strong suppression of spin-dephasing is found. This suppression of spin-dephasing shows a strong dependence on the wire orientation with respect to the crystal lattice. The relevance for realistic cases is evaluated by studying how this effect degrades for deviating strength of Rashba and linear Dresselhaus fields, and with the inclusion of the cubic Dresselhaus term.

KW - Semiconductor spintronics

KW - Two-dimensional electron gas

KW - Spin-orbit coupling

KW - Spin relaxation

KW - RELAXATION

U2 - 10.1007/s10948-009-0525-2

DO - 10.1007/s10948-009-0525-2

M3 - Article

SN - 1557-1939

VL - 23

SP - 11

EP - 15

JO - Journal of Superconductivity and Novel Magnetism

JF - Journal of Superconductivity and Novel Magnetism

IS - 1

T2 - 5th International Conference on Physics and Applications of Spin-Related Phenomena in Semiconductors

Y2 - 3 August 2008 through 6 August 2008

ER -

Spin-Dephasing Anisotropy for Electrons in a Diffusive Quasi-1D GaAs Wire

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Keywords

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