Spin Hall conductivity of interacting two-dimensional electron systems
arXiv:2208.03888 · doi:10.1103/PhysRevB.106.245302
Abstract
We consider a two-dimensional electron system subjected to a short-ranged nonmagnetic disorder potential, Coulomb interactions, and Rashba spin-orbit coupling. The path-integral approach incorporated within the Keldysh formalism is used to derive the kinetic equation for the semiclassical Green's function and applied to compute the spin current within the linear response theory. We discuss the frequency dependence of the spin Hall conductivity and further elucidate the role of electron interactions at finite temperatures for both the ballistic and diffusive regimes of transport. We argue that interaction corrections to the spin Hall effect stem from the quantum interference processes whose magnitude is estimated in terms of parameters of the considered model.
arXiv commentPrepared for the PRB special issue in honor of E. I. Rashba: Spin-Coherent Phenomena in Semiconductors [14 pages, 1 figure]
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