Spin relaxation under identical Dresselhaus and Rashba coupling strengths in GaAs quantum wells

Abstract

Spin relaxation under identical Dresselhaus and Rashba coupling strengths in GaAs quantum wells is studied in both the traditional collinear statistics, where the energy spectra do not contain the spin-orbit coupling terms, and the helix statistics, where the spin-orbit couplings are included in the energy spectra. We show that there is only marginal difference between the spin relaxation times obtained from these two different statistics. We further show that with the cubic term of the Dresselhaus spin-orbit coupling included, the spin relaxation time along the (1,1,0) direction becomes finite, although it is still much longer than that along the other two perpendicular directions. The properties of the spin relaxation along this special direction under varies conditions are studied in detail.

9 pages, 4 figures. J. Appl. Phys. 99, 2006 (in press)

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• Spin susceptibilities, spin densities and their connection to spin-currents
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• Hole spin relaxation in semiconductor quantum dots
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• Modulation of spin dynamics in a channel of a non-ballistic spin field effect transistor
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• Datta-Das type spin-field effect transistor in non-ballistic regime
• Spin relaxation due to the Bir-Aronov-Pikus mechanism in intrinsic and $p$-type GaAs quantum wells from a fully microscopic approach
• Electron spin diffusion and transport in graphene
• Spin diffusion/transport in $n$-type GaAs quantum wells
• Hole spin relaxation in intrinsic and $p$-type bulk GaAs
• Hot-carrier transport and spin relaxation on the surface of topological insulator
• Hole spin relaxation in $p$-type (111) GaAs quantum wells
• Kinetics of spin coherence of electrons in $n$-type InAs quantum wells under intense terahertz laser fields
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• Modeling of diffusion of injected electron spins in spin-orbit coupled microchannels
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• Electron spin diffusion at the interface of multiferroic oxides
• Infinite spin diffusion length of any spin polarization along direction perpendicular to effective magnetic field from Dresselhaus and Rashba spin-orbit couplings with identical strengths in (001) GaAs quantum wells
• High-field charge transport on the surface of Bi${}_2$Se${}_3$
• Magnetotransport properties of an unconventional Rashba spin-orbit coupled two-dimensional electronic system