Spin filters with Fano dots

Details Spin filters with Fano dots Spin filters with Fano dots

2004-01-27

arxiv.org/abs/cond-mat/0401552v1

Eur. Phys. J. B 37, 399-403 (2004)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

5 pages, 4 figures, to be published in European Physical Journal B

Scientific paper

We compute the zero bias conductance of electrons through a single ballistic channel weakly coupled to a side quantum dot with Coulomb interaction. In contrast to the standard setup which is designed to measure the transport through the dot, the channel conductance reveals Coulomb blockade dips rather then peaks due to the Fano-like backscattering. At zero temperature the Kondo effect leads to the formation of broad valleys of small conductance corresponding to an odd number of electrons on the dot. By applying a magnetic field in the dot region we find two dips corresponding to a total suppression in the conductance of spins up and down separated by an energy of the order of the Coulomb interaction. This provides a possibility of a perfect spin filter.

Affiliated with

Also associated with

No associations

Rating

Spin filters with Fano dots 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 Spin filters with Fano dots, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Spin filters with Fano dots will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-646889