Spin precession and electron spin polarization wave in [001]-grown quantum wells |
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Authors: | G H Liu Y H Chen C H Jia and Z G Wang |
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Institution: | (1) Key laboratory of semiconductor material science, Institute of semiconductors, Chinese academy of science, P.O. Box 912, Beijing, 100083, P.R. China |
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Abstract: | We theoretically study the spatial behaviors of spin precessions modulated by an effective magnetic field in a two-dimensional
electron system with spin-orbit interaction. Through analysis of
interaction between the spin and the effective magnetic field, we find some laws of spin precession in the system, by which
we explain some previous phenomena of spin precession, and predict a controllable electron spin polarization wave in 001]-grown
quantum wells. The shape of the wave, like water wave, mostly are ellipse-like or circle-like, and the wavelength is anisotropic
in the quantum wells with two unequal coupling strengths of the Rashba and Dresselhaus interactions, and is isotropic in the
quantum wells with only one spin orbit interaction. |
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Keywords: | PACS" target="_blank">PACS 72 25 Dc Spin polarized transport in semiconductors 71 70 Ej Spin-orbit coupling Zeeman and Stark splitting Jahn-Teller effect 85 75 Hh Spin polarized field effect transistors |
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