2004/12/21 by Satoshi Kokado, Kikuo Harigaya
Physics and Astronomy · Computer Science · #cond-mat.mes-hall #cond-mat.mtrl-sci #cs.CE #physics.chem-ph #quant-ph
paper · pdf · doi:10.1016/j.synthmet.2005.07.187
published as Synthetic Metals, Volume 152, Issues 1-3, 20 September 2005, Pages 465-468 · 4 pages, 3 figures, accepted for publication in Synth. Metals
arxiv created 2004/12/21 · arxiv updated 2009/12/01
Towards a novel magnetoresistance (MR) device with a carbon nanotube, we propose ``nonmagnetic metal/zigzag nanotube encapsulating magnetic atoms/nonmagnetic metal'' junctions. We theoretically investigate how spin-polarized edges of the nanotube and the encapsulated magnetic atoms influence on transport. When the on-site Coulomb energy divided by the magnitude of transfer integral, U/|t|, is larger than 0.8, large MR effect due to the direction of spins of magnetic atoms, which has the magnitude of the MR ratio of about 100%, appears reflecting such spin-polarized edges.