Abstract
The spin-dependent transport in multiwall carbon nanotubes,obtained by chemical vapour deposition in porous aluminamembranes, has been investigated. The zero-bias anomaly is shownto follow the typical power law GT−α(eV/kT). In thenanotubes contacted with Ni pads, the magnetoresistance dueto the spin-polarised current (SD-MR) is destroyed. In the case ofthose contacted with Co pads, however, the SD-MR isobserved. These measurements show that both the observation of atypical scaling law of the conductance (for nanotubes up to1.5 μm) and a short spin diffusion length (less than0.15 μm with nickel contacts and 0.7 μm with cobaltcontacts) coexist through the nanotube. This observation may beinterpreted in terms of a reminiscence of the Luttinger-liquidbehaviour with spin-charge separation.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
