Implementation of a nonequilibrium Green’s function method to calculate spin-transfer torque

2007/11/30 by Christian Heiliger, Michael Czerner, Bogdan Yu. Yavorsky +2 · 1 citation
Chemistry · Physics and Astronomy · #Advanced Physical and Chemical Molecular Interactions #Magnetic properties of thin films #Quantum and electron transport phenomena #cond-mat.mes-hall

paper · pdf · doi:10.1063/1.2835071

published as J. Appl. Phys. 103, 07A709 (2008) · 4 pages, 4 figures

arxiv created 2008/02/13 · openalex publication_date 2008/02/13 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

We present an implementation of the steady state Keldysh approach in a Green’s function multiple scattering scheme to calculate the nonequilibrium spin density. This density is used to obtain the spin-transfer torque in junctions showing the magnetoresistance effect. We use our implementation to study the spin-transfer torque in metallic Co∕Cu∕Co junctions.

Citations

• Current-driven excitation of magnetic multilayers
• Current-induced order parameter dynamics: Microscopic theory applied toCo∕Cu∕Cospin valves

Cited by

• Spin caloritronics in magnetic tunnel junctions:Ab initiostudies