Spin dynamics of Rashba-Dresselhaus two-dimensional electron systems with electron-electron interactions |
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Authors: | Y Li and J-X Chen |
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Institution: | 1.Institute of Materials Physics, Hangzhou Dianzi University,Hangzhou,P.R. China |
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Abstract: | Spin dynamics of Rashba-Dresselhaus two-dimensional electron systems is studied by taking account of electron-electron interactions
under the D’yakonov-Perel’ mechanism. The diffusion equations for charge and spin densities are obtained through decoupling
of the interactions using the auxiliary Bose field. We show that the electron-electron interaction has no effect on the infinite
spin lifetime when the Rashba and Dresselhaus coupling constants satisfy the condition α = ±β. If the general condition α≠±β
is satisfied, the spin lifetime is finite and enhanced by the electron-electron interaction with the increment of the temperature
in the ballistic regime. The increasing amplitude of the spin lifetime depends on the ratio of the temperature to the Fermi
temperature. |
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Keywords: | |
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