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Related papers: Hole spin dephasing in $p$-type semiconductor quan…

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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

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 perform a many-body study of the spin dephasing due to the D'yakonov-Perel' effect in n-typed GaAs (100) quantum wells under high magnetic fields in the Voigt configuration by constructing and numerically solving the kinetic Bloch…

Condensed Matter · Physics 2015-06-24 M. Q. Weng , M. W. Wu

By constructing and numerically solving the kinetic Bloch equations 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. In our study, we include…

Condensed Matter · Physics 2009-11-10 M. Q. Weng , M. W. Wu

Multi-subband effect on spin precession and spin dephasing in $n$-type GaAs quantum wells is studied with electron-electron and electron-phonon scattering explicitly included. The effects of temperature, well width and applied electric…

Materials Science · Physics 2007-05-23 M. Q. Weng , M. W. Wu

We perform a study of the effect of the high in-plane electric field on the spin precession and spin dephasing due to the D'yakonov-Perel' mechanism in $n$-type GaAs (100) quantum wells by constructing and numerically solving the kinetic…

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

We perform a many-body investigation of the spin dephasing in $n$-typed InAs quantum wells under moderate magnetic fields in the Voigt configuration by constructing and numerically solving the kinetic Bloch equations. We obtain the spin…

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

We perform a theoretical investigation on the time evolution of spin pulses in an $n$-type GaAs (001) quantum well with and without external electric field at high temperatures by constructing and numerically solving the kinetic spin Bloch…

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

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

We investigate the spin relaxation and spin dephasing of $n$-type GaAs quantum wells. We obtain the spin relaxation time $T_1$, the spin dephasing time $T_2$ and the ensemble spin dephasing time $T_2^{\ast}$ by solving the full microscopic…

Materials Science · Physics 2007-05-23 C. Lü , J. L. Cheng , M. W. Wu , I. C. da Cunha Lima

We investigate the spin relaxation due to the random Rashba spin-orbit coupling in symmetric GaAs (110) quantum wells from the fully microscopic kinetic spin Bloch equation approach. All relevant scatterings, such as the electron-impurity,…

Mesoscale and Nanoscale Physics · Physics 2010-03-17 Y. Zhou , M. W. Wu

The spin diffusion/transport in $n$-type (001) GaAs quantum well at high temperatures ($\ge120$ K) is studied by setting up and numerically solving the kinetic spin Bloch equations together with the Poisson equation self-consistently. All…

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

Utilizing time-resolved Kerr rotation techniques, we have investigated the spin dynamics of a high mobility, low density two dimensional electron gas in a GaAs/Al0:35Ga0:65As heterostructure in dependence on temperature from 1.5 K to 30 K.…

Other Condensed Matter · Physics 2009-11-13 X. Z. Ruan , H. H. Luo , Yang Ji , Z. Y. Xu , V. Umansky

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

Hole spin relaxation in [001] strained asymmetric Si/Si$_{0.7}$Ge$_{0.3}$ (Ge/Si$_{0.3}$Ge$_{0.7}$) quantum wells is investigated in the situation with only the lowest hole subband being relevant. The effective Hamiltonian of the lowest…

Materials Science · Physics 2009-10-10 P. Zhang , M. W. Wu

We investigate the spin relaxation of $p$-type GaAs quantum wires by numerically solving the fully microscopic kinetic spin Bloch equations. We find that the quantum-wire size influences the spin relaxation time effectively by modulating…

Materials Science · Physics 2008-10-24 C. Lü , U. Zülicke , M. W. Wu

We investigate the electron spin dephasing in the presence of spin phase recovering by a serried $\pi$-pulse sequence in $n$-type (001) GaAs quantum wells in a wide range of temperature and density regimes. Our numerical calculation is…

Mesoscale and Nanoscale Physics · Physics 2012-05-15 K. Shen , M. W. Wu

The carrier spin coherence in a p-doped GaAs/(Al,Ga)As quantum well with a diluted hole gas has been studied by picosecond pump-probe Kerr rotation with an in-plane magnetic field. For resonant optical excitation of the positively charged…

Other Condensed Matter · Physics 2009-11-13 M. Syperek , D. R. Yakovlev , A. Greilich , J. Misiewicz , M. Bayer , D. Reuter , A. D. Wieck

Hole spin relaxation time due to the hole-acoustic phonon scattering in GaAs quantum dots confined in quantum wells along (001) and (111) directions is studied after the exact diagonalization of Luttinger Hamiltonian. Different effects such…

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

We perform an investigation on the spin relaxation for $n$-type ZnO (0001) quantum wells by numerically solving the kinetic spin Bloch equations with all the relevant scattering explicitly included. We show the temperature and electron…

Mesoscale and Nanoscale Physics · Physics 2009-10-10 C. Lü , J. L. Cheng
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