Non-trivial spatial dependence of the spin torques in L1${}_0$ FePt-based tunnelling junctions

Mario Galante, Matthew O. A. Ellis, Stefano Sanvito

We present an {\it ab-initio} study of the spin-transfer torque in a Fe/MgO/FePt/Fe magnetic tunnel junctions. We consider a FePt film with a thickness up to six unit cells, either…