Coulomb interaction in the spin Hall effect

Coulomb interaction in the spin Hall effect

Spin-Hall effect and spin-Coulomb drag in doped semiconductors.

In this review, we describe in detail two important spin-transport phenomena: the extrinsic spin-Hall effect (coming from spin-orbit interactions between electrons and impurities) and the spin-Coulomb drag. The interplay of these two phenomena is analyzed. In particular, we discuss the influence of scattering between electrons with opposite spins on the spin current and the spin accumulation pr...

Interaction effects in superconductor/quantum spin Hall devices: universal transport signatures and fractional Coulomb blockade

David Aasen,1 Shu-Ping Lee,1, 2 Torsten Karzig,1, 3 and Jason Alicea1, 4 Department of Physics and Institute for Quantum Information and Matter, California Institute of Technology, Pasadena, CA 91125, USA Department of Physics, University of Alberta, Edmonton, Alberta T6G 2E1, Canada Station Q, Microsoft Research, Santa Barbara, California 93106-6105, USA Walter Burke Institute for Theoretical ...

Effect of screening of the Coulomb interaction on the conductivity in the quantum Hall regime.

We study variable range hopping in the quantum Hall effect regime in the presence of a metallic gate parallel to the plane of a two-dimensional electron gas. Screening of the Coulomb interaction by the gate causes the partial “filling” of the Coulomb gap in the density of localized states. At low enough temperatures this leads to a substantial enhancement and a new temperature behavior of the h...

Coulomb interaction effects in spin-polarized transport

We study the effect of the electron-electron interaction on the transport of spin polarized currents in metals and doped semiconductors in the diffusive regime. In addition to well-known screening effects, we identify two additional effects, which depend on many-body correlations and exchange and reduce the spin diffusion constant. The first is the “spin Coulomb drag” an intrinsic friction mech...