Figure 1: Electronic structure of interface Rashba states and principle of experiments.
From: Spin-to-charge conversion using Rashba coupling at the interface between non-magnetic materials
(a) Typical spin-split dispersion curves of a Rashba 2DEG for αR>0 (adapted from Nechaev et al.28) and (b) typical Fermi contours. An electron flow (that is, a shift of the Fermi contours in the direction of the flow) automatically induces a nonzero spin density (REE). Inversely, a nonzero spin density generated by spin injection induces an electron flow (IREE). (c) Scheme of the NiFe/Ag/Bi samples under resonance. The radio frequency (RF) field is along y, and the DC field along x. JS is the vertical DC spin current injected into the Ag/Bi interface states (back flow included), and converted into a horizontal DC charge current IC by the IREE. In an open circuit situation IC is balanced by the current associated to the DC voltage V.
