The spin galvanic effect (SGE) describes the conversion of a nonequilibrium spin polarization into a transverse charge current. Recent experiments have demonstrated a large conversion efficiency for the two-dimensional electron gas formed at the interface between two insulating oxides, LaAlO3 and SrTiO3. Here, we analyze the SGE for oxide interfaces within a three-band model for the Ti t2g orbitals which displays an interesting variety of effective spin-orbit couplings in the individual bands that contribute differently to the spin-charge conversion. Our analytical approach is supplemented by a numerical treatment where we also investigate the influence of disorder and temperature, which turns out to be crucial to providing an appropriate description of the experimental data.
|Titolo:||Theory of the Spin Galvanic Effect at Oxide Interfaces|
|Data di pubblicazione:||2017|
|Citazione:||Seibold, G., Caprara, S., Grilli, M., & Raimondi, R. (2017). Theory of the Spin Galvanic Effect at Oxide Interfaces. PHYSICAL REVIEW LETTERS, 119(25), 256801.|
|Appare nelle tipologie:||1.1 Articolo in rivista|