TMR Effect and Resonant Tunneling in Magnetic Tunnel Junctions

Abstract

Since the discoveries of large magnetoresistance effects in magnetic multilayers and magnetic tunnel junctions, a new field of electronics named spintronics, which makes use of both the electric charge and the spin of electrons in solids, has been developing rapidly. In this paper, we review the tunnel magnetoresistance (TMR) effect, which is one of the most important topics in spintronics. We also report our recent study on resonant tunneling effect in spinpolarized systems.