Novel Quantum Spin Assisted Tunneling in Half Metallic Manganite Tunnel Junctions

Details Novel Quantum Spin Assisted Tunneling in Half Metallic Manganite Tunnel Junctions Novel Quantum Spin Assisted Tunneling in Half Metallic Manganite Tunnel Junctions

2001-02-05

arxiv.org/abs/cond-mat/0102086v1

Physics

Condensed Matter

5 pages, 1 figure

Scientific paper

10.1103/PhysRevB.63.220406

The electron tunneling in half metallic manganite tunnel junctions is studied by using a quantum mechanically treated double exchange model. We show that the stimulation of spin excitations, caused by the strong Hund's coupling between the conduction $e_g$ electrons and the localized quantum spins of the manganite ions, would assist electrons to tunnel through the junction even with the antiparallel aligned magnetizations of the electrodes. This mechanism gives rise to an extra tunnel conductance, in addition to that predicted by Julliere's model. Our theory is in good agreement with the voltage dependence of the tunnel conductance in manganite tunnel junctions observed by experiments.

Affiliated with

Also associated with

No associations

Rating

Novel Quantum Spin Assisted Tunneling in Half Metallic Manganite Tunnel Junctions does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Novel Quantum Spin Assisted Tunneling in Half Metallic Manganite Tunnel Junctions, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Novel Quantum Spin Assisted Tunneling in Half Metallic Manganite Tunnel Junctions will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-104658