We study the spin-charge conversion mechanisms in a two-dimensional gas of electrons moving in a smooth disorder potential by accounting for both Rashba-type and Mott's skew scattering contributions. We find that the quantum interference effects between spin-flip and skew scattering give rise to anisotropic spin precession scattering (ASP), a direct spin-charge conversion mechanism that was discovered in an earlier study of graphene decorated with adatoms [Huang et al., Phys. Rev. B 94, 085414 (2016)]. Our findings suggest that, together with other spin-charge conversion mechanisms such as the inverse galvanic effect, ASP is a fairly universal phenomenon that should be present in disordered two-dimensional systems lacking inversion symmetry.

中文翻译：

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缺乏反演对称性的无序二维电子气中的自旋电荷转换

我们通过考虑Rashba型和Mott的偏斜散射贡献，研究了在二维电子气中以平滑无序势运动的自旋电荷转换机制。我们发现，自旋翻转和偏斜散射之间的量子干涉效应引起各向异性自旋进动散射（ASP），这是一种直接的自电荷转换机制，该机制是在早期用吸附原子修饰的石墨烯中发现的[Huang 等。，物理 版本B 94，085414（2016） ]。我们的发现表明，与其他自旋电荷转换机制（例如逆电效应）一起，ASP是一种相当普遍的现象，应在缺乏反对称性的无序二维系统中出现。