Contact-induced spin polarization in carbon nanotubes
Citation:
Ferreira, Mauro S. ; Sanvito, Stefano, Contact-induced spin polarization in carbon nanotubes, Phys. Rev. B, 69, 2004, 035407-Download Item:
Contact-induced.pdf (published (publisher copy) peer-reviewed) 63.65Kb
Abstract:
Motivated by the possibility of combining spintronics with molecular structures, we investigate the conditions for the appearance of spin polarization in low-dimensional tubular systems by contacting them to a magnetic substrate. We derive a set of general expressions describing the charge transfer between the tube and the substrate and the relative energy costs. The mean-field solution of the general expressions provides an insightful formula for the induced spin polarization. Using a tight-binding model for the electronic structure we are able to estimate the magnitude and the stability of the induced moment. This indicates that a significant magnetic moment in carbon nanotubes can be observed.
Author's Homepage:
http://people.tcd.ie/ferreirmDescription:
PUBLISHED
Author: FERREIRA, MAURO
Type of material:
Journal ArticleCollections:
Series/Report no:
Phys. Rev. B69
Availability:
Full text availableKeywords:
PhysicsLicences: