Lateral Spin Diffusion Probed by Two-Color Hanle-MOKE Technique

• Authors: J. Quast , G. Astakhov , W. Ossau , L. Molenkamp , J. Heinrich , S. Höfling , A. Forchel
• Languages of publication: EN

Abstracts

EN

We report on all optical spatially resolved spin diffusion experiments in an unstrained, unbiased n-GaAs layer. Optical pump and probe intensities are varied over a wide range to study the impact of optical disturbance on spin transport. Both quantities have a considerable influence on the measured spin diffusion length and spin lifetime. Furthermore, an effective spin diffusion coefficient was obtained as a function of temperature.

Keywords

EN

72.25.Dc; 72.25.Fe; 85.75.-d; 72.25.Rb

Discipline

• 72.25.Fe: Optical creation of spin polarized carriers
• 72.25.Dc: Spin polarized transport in semiconductors
• 72.25.Rb: Spin relaxation and scattering
• 85.75.-d: Magnetoelectronics; spintronics: devices exploiting spin polarized transport or integrated magnetic fields

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2008
• Volume: 114
• Issue: 5
• Pages: 1311-1316

Dates

published

2008-11

received

2008-06-07

Contributors

author

J. Quast

• Physikalisches Institut (EP3), Universität Wűrzburg, 97074 Wűrzburg, Germany

author

G. Astakhov

• Physikalisches Institut (EP3), Universität Wűrzburg, 97074 Wűrzburg, Germany

author

W. Ossau

• Physikalisches Institut (EP3), Universität Wűrzburg, 97074 Wűrzburg, Germany

author

L. Molenkamp

• Physikalisches Institut (EP3), Universität Wűrzburg, 97074 Wűrzburg, Germany

author

J. Heinrich

• Physikalisches Institut (TP), Universität Wűrzburg, 97074 Wűrzburg, Germany

author

S. Höfling

• Physikalisches Institut (TP), Universität Wűrzburg, 97074 Wűrzburg, Germany

author

A. Forchel

• Physikalisches Institut (TP), Universität Wűrzburg, 97074 Wűrzburg, Germany

References

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Identifiers

DOI

10.12693/APhysPolA.114.1311