Abstract
The objective of this work is to describe the tunnel electron current in single-barrier magnetic tunnel junctions within an approach that goes beyond the single-band transport model. We propose a ballistic multichannel electron transport model that can explain the influence of in-plane lattice strain on the tunnel magnetoresistance as well as the asymmetric voltage behavior. We consider as an example single-crystal magnetic Fe(110) electrodes for Fe/insulator/Fe and Fe/insulator/LaSrMnO tunnel junctions, where the electronic band structures of Fe and LaSrMnO are derived by ab initio calculations.
- Received 13 July 2013
DOI:https://doi.org/10.1103/PhysRevB.88.060405
©2013 American Physical Society