2007/12/01 by Aurélien Manchon, A Manchon, N Ryzhanova +7 · 1 citation
Materials Science · Physics and Astronomy · #Asymmetry #Chemical and Physical Properties of Materials #Coupling (piping) #Magnetic properties of thin films #Quantum and electron transport phenomena #Quantum tunnelling #Spin (aerodynamics) #Spin-transfer torque #Torque #Transverse plane #Tunnel magnetoresistance #cond-mat.mes-hall
paper · pdf · doi:10.1088/0953-8984/20/14/145208
arxiv created 2007/12/01 · openalex publication_date 2008/03/18 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
A free electron description of spin-dependent transport in magnetic tunnel junctions with non-collinear magnetizations is presented. We investigate the origin of transverse spin density in tunneling transport and the quantum interferences which give rise to oscillatory torques on the local magnetization. Spin transfer torque is also analyzed and an important bias asymmetry is found as well as a damped oscillatory behavior. Furthermore, we investigate the influence of the s–d exchange coupling on torque, in particular in the case of half-metallic MTJs, in which the spin transfer torque is due to interfacial spin-dependent reflections.