Spin-dependent electron behaviour in quantum point contacts
2000 (English)In: Nanotechnology, ISSN 0957-4484, Vol. 11, no 4, 318-322 p.Article in journal (Refereed) Published
The effect of spontaneous spin polarization in quantum point contacts (QPCs) is investigated by self-consistent modelling within the Kohn-Sham local spin-density formalism. The existence of the spin-polarized state of the QPC channel in the low-density regime is shown to change the value and the shape of the effective potential barrier for up- and down-spin electrons. We suggest that this effect can be relevant to the explanation of the anomalous 0.7-structure in the QPC conductance and may assist spin injection in potential spintronic devices.
Place, publisher, year, edition, pages
2000. Vol. 11, no 4, 318-322 p.
Engineering and Technology
IdentifiersURN: urn:nbn:se:liu:diva-47529DOI: 10.1088/0957-4484/11/4/325OAI: oai:DiVA.org:liu-47529DiVA: diva2:268425