Krompiewski, Stefan and Nemec, Norbert and Cuniberti, Gianaurelio (2006) Spin transport in disordered single-wall carbon nanotubes contacted to ferromagnetic leads. Physica Status Solidi (B) 249 (1), pp. 179-182.
Other URL: http://dx.doi.org/10.1002/pssb.200562410
Recent conductance measurements on multi-wall carbon nanotubes (CNTs) reveal an effective behavior similar to disordered single-wall CNTs. This is due to the fact that electric current flows essentially through the outermost shell and is strongly influenced by inhomogeneous electrostatic potential coming from the inner tubes. Here, we present theoretical studies of spin-dependent transport through disorder-free double-wall CNTs as well as single-wall CNTs with Anderson-type disorder. The CNTs are end-contacted to ferromagnetic electrodes modelled as fcc (111) surfaces. Our results shed additional light on the giant magnetoresistance effect in CNTs. Some reported results concern realistically long CNTs, up to several hundred nanometers.
|Institutions:||Physics > Institute of Theroretical Physics > Retired Professors > Group Gianaurelio Cuniberti|
|Projects:||EU Grant: Carbon nanotube devices at the quantum limit, Graduiertenkolleg Nichtlinearität und Nichtgleichgewicht, SFB 689: Spinphänomene in reduzierten Dimensionen, Volkswagen Stiftung: Molecular Computing|
|Subjects:||500 Science > 530 Physics|
|Refereed:||Yes, this version has been refereed|
|Created at the University of Regensburg:||Yes|
|Deposited On:||20 Mar 2007|
|Last Modified:||20 Jul 2011 21:01|