Change search
ReferencesLink to record
Permanent link

Direct link
A perfect spin-filter quantum dot system
KTH, Superseded Departments, Physics.
2004 (English)In: Journal of Physics: Condensed Matter, ISSN 0953-8984, E-ISSN 1361-648X, Vol. 16, no 16, L249-L254 p.Article in journal (Refereed) Published
Abstract [en]

The discovery of a novel effect in the transport through a QD spin-dependently coupled to magnetic contacts is reported. For a finite range of source-drain voltages the spin projections of the current cancel exactly, resulting in a completely suppressed output current. The spin down current behaves as one normally expects whereas the spin up current becomes negative. As the source-drain voltage is increased the spin up current eventually becomes positive. Thus, tuning the source-drain voltage such that the spin up current vanishes will result in a perfect spin filter.

Place, publisher, year, edition, pages
2004. Vol. 16, no 16, L249-L254 p.
National Category
Physical Sciences
URN: urn:nbn:se:kth:diva-44976DOI: 10.1088/0953-8984/16/16/L03ISI: 000221482900004ScopusID: 2-s2.0-2442446075OAI: diva2:453104
Available from: 2011-11-01 Created: 2011-10-26 Last updated: 2012-03-20Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full textScopus

Search in DiVA

By author/editor
Fransson, Jonas
By organisation
In the same journal
Journal of Physics: Condensed Matter
Physical Sciences

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 17 hits
ReferencesLink to record
Permanent link

Direct link