Spin polarized current in a junction of zigzag carbon nanotube
| dc.creator | Jiang, Zhan-Feng | |
| dc.creator | Li, Jian | |
| dc.creator | Shen, Shun-Qing | |
| dc.creator | Liu, W. M. | |
| dc.date | 2007-09-11 | |
| dc.date.accessioned | 2026-07-07T08:28:44Z | |
| dc.date.available | 2026-07-07T08:28:44Z | |
| dc.description | We investigated spin-resolved electronic transport through a junction composed of a nonmagnetic metal electrode and a zigzag carbon nanotube by means of self-consistent Green's function method in the tight binding approximation and the unrestricted Hartree-Fock approximation. Our results show that the electric current can be spin-polarized if the coupling of the junction is weak. Further calculations on spin-spin correlation and local density of states reveal the existence of magnetic edge states in zigzag carbon nanotubes, which is responsible for the observed spin-polarized current and can be controlled by applying a gate voltage. We also studied the influence of the nearest-neighbor Coulomb interaction and the junction coupling strength on the spin-polarization of the current. | |
| dc.description | 8 pages, 9 figures | |
| dc.identifier | https://arxiv.org/abs/0709.1566 | |
| dc.identifier | http://arxiv.org/abs/0709.1566 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/137723 | |
| dc.subject | Mesoscale and Nanoscale Physics | |
| dc.title | Spin polarized current in a junction of zigzag carbon nanotube | |
| dc.type | text |