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Spin valve effect in single-atom contacts
- Source :
- New Journal of Physics. 13:085011
- Publication Year :
- 2011
- Publisher :
- IOP Publishing, 2011.
-
Abstract
- Magnetic single-atom contacts have been controllably fabricated with a scanning tunnelling microscope. A voltage-dependent spin valve effect with conductance variations of ≈40% is reproducibly observed from contacts comprising a Cr-covered tip and Co and Cr atoms on ferromagnetic nanoscale islands on W(110) with opposite magnetization. The spin-dependent conductances are interpreted from first-principles calculations in terms of the orbital character of the relevant electronic states of the junction.
Details
- ISSN :
- 13672630
- Volume :
- 13
- Database :
- OpenAIRE
- Journal :
- New Journal of Physics
- Accession number :
- edsair.doi...........5af4adf6fbead0ae7643c0f485333a80