Enhancement of tunnel magnetoresistance in magnetic tunnel junction by a superlattice barrier
Journal
Applied Physics Letters
Journal Volume
104
Journal Issue
4
Date Issued
2014
Author(s)
Abstract
Tunnel magnetoresistance of magnetic tunnel junction improved by a superlattice barrier composed of alternate layers of a nonmagnetic metal and an insulator is proposed. The forbidden band of the superlattice is used to predict the low transmission range in the superlattice barrier. By forbidding electron transport in the anti-parallel configuration, the tunnel magnetoresistance is enhanced in the superlattice junction. The results show that the tunnel magnetoresistance ratio for a superlattice magnetic tunnel junction is greater than that for traditional single or double barrier junctions.
Type
journal article