Institut des
NanoSciences de Paris
insp
Accueil > Evénements > Séminaires > Archives 2015 > « Spin-charge conversion
insp
5.jpg

Séminaire exceptionnel de l’INSP

« Spin-charge conversion and spin current generation in electron liquids » - Giovanni Gignale - Lundi 15 juin 2015 à 11 h

INSP - 4 place Jussieu - 75252 PARIS Cedex 05 - Barre 22-23 - 3e étage, salle 317

Giovanni Vignale - Professor of Physics - University of Missouri-Columbia, USA

Abstract

Semiconductor quantum wells, metallic surfaces and interfaces, layered ox- ides, and monolayer materials are all promising platforms for the observation of spin-charge conversion and the generation of spin currents due to strong spin- orbit interaction in quasi two- dimensional electron liquids. In this talk I focus on the theoretical description of a number of effects that appear to be promis- ing for spintronic applications. These effects are (1) the conversion of a charge current into a spin current (spin Hall effect) and its inverse ; (2) the generation of spin polarization from an electric current (Edelstein effect) and its inverse (spin-galvanic effect) ; (3) the spin current swapping effect whereby a current of x-oriented spins traveling in the y direction acts as a source for a current of y-oriented spins in the x direction. I will show how the SU(2) drift-diffusion theory allows a unified treatment of these effects, and will briefly describe some of their prospective applications in spintronic technology.