Volume 67, Number 1, July 2004
|Page(s)||103 - 109|
|Section||Condensed matter: electronic structure, electrical, magnetic, and optical properties|
|Published online||01 June 2004|
Spin-dependent magnetoresistance in multiwall carbon nanotubes
IPN, Faculté des Sciences de Base, EPFL - 1015 Lausanne, Switzerland
2 LSI, Ecole Polytechnique, CNRS-UMR 7642 and CEA/DSM/DRECAM 91128 Palaiseau Cedex, France
Corresponding author: email@example.com
Accepted: 27 April 2004
The spin-dependent transport in multiwall carbon nanotubes, obtained by chemical vapour deposition in porous alumina membranes, has been investigated. The zero-bias anomaly is shown to follow the typical power law . In the nanotubes contacted with pads, the magnetoresistance due to the spin-polarised current (SD-MR) is destroyed. In the case of those contacted with pads, however, the SD-MR is observed. These measurements show that both the observation of a typical scaling law of the conductance (for nanotubes up to 1.5) and a short spin diffusion length (less than 0.15 with nickel contacts and 0.7 with cobalt contacts) coexist through the nanotube. This observation may be interpreted in terms of a reminiscence of the Luttinger-liquid behaviour with spin-charge separation.
PACS: 73.63.Fg – Electronic transport in nanoscale materials and structures: Nanotubes / 72.15.Nj – Collective modes (e.g., in one-dimensional conductors) / 72.25.Hg – Electrical injection of spin polarized carriers
© EDP Sciences, 2004
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.