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- W4301182889 abstract "The stationary state of the spin-Hall bar is studied in the framework of a variational approach that includes non-equilibrium screening effects at the lateral edges. The minimization of the power dissipated in the system is performed with taking into account the spin-flip relaxation and the global constrains due to the electric generator and global charge conservation. The calculation is performed within both the approximations of negligible spin-flip scattering and strong spin-flip scattering. In both cases, simple expressions the longitudinal and the transverse pure spin-currents are derived analytically. In the first case, the spin-accumulation is linear across the Spin-Hall bar, symmetric from one edge to other, and the transverse spin-current vanishes. With strong spin-flip scattering, a transverse pure spin-current flows across the sample together with with longitudinal pure spin-current. Surprisingly, due to the small values of the screening Debye length, the effect of the spin-flip scattering seems not to change significantly the profile and the amplitude of the spin-accumulation. A quantitative analysis predicts a spin accumulation of the order of $1%$ of the density of carriers for an applied electric field of $5 mV/m m^2$ at $30K$, with a spin-Hall angle of $theta_{SH} = 10^{-4}$." @default.
- W4301182889 created "2022-10-04" @default.
- W4301182889 creator A5091806025 @default.
- W4301182889 date "2022-10-04" @default.
- W4301182889 modified "2023-09-26" @default.
- W4301182889 title "Spin-Hall devices: quantitative predictions of the spin-accumulation and pure spin-currents (Conference Presentation)" @default.
- W4301182889 doi "https://doi.org/10.1117/12.2635882" @default.
- W4301182889 hasPublicationYear "2022" @default.
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