Is magnetoresistance in excess of 1,000 % possible in Ni point contacts?

Physics – Condensed Matter – Materials Science

Scientific paper

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

9 pages, 12 figures

Scientific paper

Electronic transport in nickel magnetic point contacts is investigated with a combination of density functional theory and the non-equilibrium Green functions method. In particular we address the possibility of huge ballistic magnetoresistance in impurity-free point contacts and the effects of oxygen impurities. On-site corrections over the local spin density approximation (LSDA) for the exchange and correlation potential, namely the LDA+U method, are applied in order to account for low-coordination and strong correlations. We show that impurity-free point contacts present magnetoresistance never in excess of 50%. This value can raise up to about 450 % in the case of oxygen contamination. These results suggest that magnetoresistance in excess of 1,000 % can not have solely electronic origin.

No associations

LandOfFree

Say what you really think

Search LandOfFree.com for scientists and scientific papers. Rate them and share your experience with other people.

Rating

Is magnetoresistance in excess of 1,000 % possible in Ni point contacts? 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 Is magnetoresistance in excess of 1,000 % possible in Ni point contacts?, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Is magnetoresistance in excess of 1,000 % possible in Ni point contacts? will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFWR-SCP-O-515906

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.