Matthias Braun, Jürgen König, Jan Martinek
Published 2004-11-22Version 1
We derive an expression for the spin-current through a tunnel barrier in terms of many-body Green's functions. The spin current has two contributions. One can be associated with angular-momentum transfer by spin-polarized charge currents crossing the junction. If there are magnetic moments on both sides of the tunnel junction, due to spin accumulation or ferromagnetic ordering, then there is a second contribution related to the exchange coupling between the moments.
Comments: 5 pages, 1 figure, submitted to Superlattices and Microstructures
Journal: Superlattices and Microstructures 37 (2005) p333-336
Symmetries and hybridization in the indirect interaction between magnetic moments in MoS$_{2}$ nanoflakes
Strain-Induced Coupling of Spin Current to Nanomechanical Oscillations
Spin current and rectification in one-dimensional electronic systems
