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Related papers: Electron spin relaxation in $p$-type GaAs quantum …

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We study the electron spin relaxation in intrinsic and $p$-type (001) GaAs quantum wells by constructing and numerically solving the kinetic spin Bloch equations. All the relevant scatterings are explicitly included, especially the…

Materials Science · Physics 2008-02-21 J. Zhou , M. W. Wu

We perform a full microscopic investigation on the spin relaxation in $n$-type (001) GaAs quantum wells with Al$_{0.4}$Ga$_{0.6}$As barrier due to the D'yakonov-perel' mechanism from nearly 20 K to the room temperature by constructing and…

Materials Science · Physics 2007-05-23 J. Zhou , J. L. Cheng , M. W. Wu

We comment on the conclusion by Teng et al. [J. Phys. D: Appl. Phys. {\bf 42}, 135111 (2009)] that the Bir-Aronov-Pikus mechanism is more important than the D'yakonov-Perel' mechanism at high carrier density in intrinsic bulk GaAs. We point…

Mesoscale and Nanoscale Physics · Physics 2009-11-09 J. H. Jiang , M. W. Wu

Electron spin relaxation in bulk III-V semiconductors is investigated from a fully microscopic kinetic spin Bloch equation approach where all relevant scatterings, such as, the electron--nonmagnetic-impurity, electron-phonon,…

Materials Science · Physics 2009-04-01 J. H. Jiang , M. W. Wu

Electron spin relaxation in paramagnetic Ga(Mn)As quantum wells is studied via the fully microscopic kinetic spin Bloch equation approach where all the scatterings, such as the electron-impurity, electron-phonon, electron-electron Coulomb,…

Materials Science · Physics 2009-04-02 J. H. Jiang , Y. Zhou , T. Korn , C. Schüller , M. W. Wu

Carrier density dependence of electron spin relaxation in an intrinsic GaAs quantum well is investigated at room temperature using time-resolved circularly polarized pump-probe spectroscopy. It is revealed that the spin relaxation time…

Materials Science · Physics 2008-10-02 L. H. Teng , P. Zhang , T. S. Lai , M. W. Wu

Spin relaxation time of conduction electrons through the Elliot-Yafet, D'yakonov-Perel and Bir-Aronov-Pikus mechanisms is calculated theoretically for bulk GaAs, GaSb, InAs and InSb of both $n$- and $p$-type. Relative importance of each…

Materials Science · Physics 2009-11-07 Pil Hun Song , K. W. Kim

The electron spin relaxation in $n$-type and intrinsic GaAs$_{1-x}$Bi$_x$ with Bi composition $0\le x \le 0.1$ is investigated from the microscopic kinetic spin Bloch equation approach. The incorporation of Bi is shown to markedly decrease…

Materials Science · Physics 2012-09-19 H. Tong , X. Marie , M. W. Wu

We present an investigation of electron-spin dynamics in p-doped bulk GaAs due to the electron-hole exchange interaction, aka the Bir-Aronov-Pikus mechanism. We discuss under which conditions a spin relaxation times for this mechanism is,…

Materials Science · Physics 2015-05-18 Hans Christian Schneider , Michael Krauss

We investigate the spin relaxation limited by the D'yakonov-Perel' mechanism in $n$-type (111) GaAs quantum wells, by means of the kinetic spin Bloch equation approach. In (111) GaAs quantum wells, the in-plane effective magnetic field from…

Mesoscale and Nanoscale Physics · Physics 2010-11-10 B. Y. Sun , P. Zhang , M. W. Wu

The electron spin dynamics in multilayer GaAs/AlGaAs quantum wells, containing high-mobility dense two-dimensional electron gases, have been studied using time-resolved Kerr rotation and resonant spin amplification techniques. The electron…

Mesoscale and Nanoscale Physics · Physics 2018-08-15 S. Ullah , G. M. Gusev , A. K. Bakarov , F. G. G. Hernandez

Temperature and carrier density dependent spin dynamics for GaAs/AlGaAs quantum wells (QWs) with different structural symmetry has been studied by using time-resolved Kerr rotation technique. The spin relaxation time is measured to be much…

Mesoscale and Nanoscale Physics · Physics 2015-05-20 L. F. Han , Y. G. Zhu , X. H. Zhang , P. H. Tan , H. Q. Ni , Z. C. Niu

We investigate hole spin relaxation in intrinsic and $p$-type bulk GaAs from a fully microscopic kinetic spin Bloch equation approach. In contrast to the previous study on hole spin dynamics, we explicitly include the intraband coherence…

Mesoscale and Nanoscale Physics · Physics 2010-09-14 K. Shen , M. W. Wu

We investigate theoretically the D'yakonov-Perel' spin relaxation time by solving the eight-band Kane model and Poisson equation self-consistently. Our results show distinct behavior with the single-band model due to the anomalous…

Mesoscale and Nanoscale Physics · Physics 2009-11-05 Jun Li , Kai Chang , F. M. Peeters

We present an analytical study of the D'yakonov-Perel' spin relaxation time for degenerate electrons in a photo-excited electron-hole liquid in intrinsic semiconductors exhibiting a spin-split band structure. The D'yakonov-Perel' spin…

Materials Science · Physics 2011-11-17 Matthew D. Mower , G. Vignale , I. V. Tokatly

We study spin relaxation in n-type bulk GaAs, due to the Dyakonov--Perel mechanism, using ensemble Monte Carlo methods. Our results confirm that spin relaxation time increases with the electronic density in the regime of moderate electronic…

Materials Science · Physics 2016-10-19 Gionni Marchetti , Matthew Hodgson , James McHugh , Roy Chantrell , Irene D'Amico

We present a detailed experimental and theoretical analysis of the spin dynamics of two-dimensional electron gases (2DEGs) in a series of n-doped GaAs/AlGaAs quantum wells. Picosecond-resolution polarized pump-probe reflection techniques…

Mesoscale and Nanoscale Physics · Physics 2015-06-25 W. J. H. Leyland , G. H. John , R. T. Harley , M. M. Glazov , E. L. Ivchenko , D. A. Ritchie , A. J. Shields , M. Henini

We perform a many-body study of the spin dephasing due to the D'yakonov-Perel' effect in n-typed GaAs (100) quantum wells for high temperatures ($\geq 120$ K) under moderate magnetic fields in the Voigt configuration by constructing and…

Condensed Matter · Physics 2007-05-23 M. Q. Weng , M. W. Wu

The D'yakonov-Perel' spin relaxation mechanism in n-doped GaAs/AlGaAs quantum wells (QWs) has been studied both theoretically and experimentally. The temperature dependence of the spin relaxation time has been calculated for arbitrary…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 M. M. Glazov , E. L. Ivchenko , M. A. Brand , O. Z. Karimov , R. T. Harley

Hole spin relaxation in $p$-type (111) GaAs quantum wells is investigated in the case with only the lowest hole subband, which is heavy-hole like in (111) GaAs/AlAs and light-hole like in (111) GaAs/InP quantum wells, being relevant. The…

Mesoscale and Nanoscale Physics · Physics 2012-06-14 L. Wang , M. W. Wu
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