Prospect for room temperature tunneling anisotropic magnetoresistance effect: density of states anisotropies in CoPt systems

Details Prospect for room temperature tunneling anisotropic magnetoresistance effect: density of states anisotropies in CoPt systems Prospect for room temperature tunneling anisotropic magnetoresistance effect: density of states anisotropies in CoPt systems

2006-01-04

arxiv.org/abs/cond-mat/0601071v1

Physics

Condensed Matter

Materials Science

4 pages, 2 figures

Scientific paper

10.1103/PhysRevB.73.024418

Tunneling anisotropic magnetoresistance (TAMR) effect, discovered recently in (Ga,Mn)As ferromagnetic semiconductors, arises from spin-orbit coupling and reflects the dependence of the tunneling density of states in a ferromagnetic layer on orientation of the magnetic moment. Based on ab initio relativistic calculations of the anisotropy in the density of states we predict sizable TAMR effects in room-temperature metallic ferromagnets. This opens prospect for new spintronic devices with a simpler geometry as these do not require antiferromagnetically coupled contacts on either side of the tunnel junction. We focus on several model systems ranging from simple hcp-Co to more complex ferromagnetic structures with enhanced spin-orbit coupling, namely bulk and thin film L1$_0$-CoPt ordered alloys and a monatomic-Co chain at a Pt surface step edge. Reliability of the predicted density of states anisotropies is confirmed by comparing quantitatively our ab initio results for the magnetocrystalline anisotropies in these systems with experimental data.

Affiliated with

Also associated with

No associations

Rating

Prospect for room temperature tunneling anisotropic magnetoresistance effect: density of states anisotropies in CoPt systems 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 Prospect for room temperature tunneling anisotropic magnetoresistance effect: density of states anisotropies in CoPt systems, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Prospect for room temperature tunneling anisotropic magnetoresistance effect: density of states anisotropies in CoPt systems will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-306568