Zener quantum dot spin filter in a carbon nanotube

Gunlyke, D. and Jefferson, J. H. and Bailey, S. W. D. and Lambert, C. J. and Pettifor, G. and Briggs, G. A. D. (2006) Zener quantum dot spin filter in a carbon nanotube. Journal of Physics: Condensed Matter, 18 (21). S843-S849. ISSN 1361-648X

Full text not available from this repository.


We predict and analyse a novel spin filter in semiconducting carbon nanotubes. By using local electrostatic gates, the conduction and valence bands can be modulated to form a double-barrier structure. The confined region below the valence band defines a Zener quantum dot, which exhibits resonant tunnelling. The resonances split in a magnetic field to make a bipolar spin filter for applications in spintronics and quantum information processing. We model this using (k) over right arrow . (p) over right arrow envelope function theory and show that this is in excellent agreement with a corresponding tight-binding calculation.

Item Type:
Journal Article
Journal or Publication Title:
Journal of Physics: Condensed Matter
Uncontrolled Keywords:
?? physicsmaterials science(all)condensed matter physicsqc physics ??
ID Code:
Deposited By:
Deposited On:
20 Jun 2007
Last Modified:
16 May 2024 01:23