Abstract

Spin-coherent quantum transport in carbon nanotube magnetic tunnel junctions is investigated theoretically. A spin-valve effect is found for metallic, armchair tubes, with a magnetoconductance ratio ranging up to 20%. Because of the finite length of the nanotube junctions, transport is dominated by resonant transmission. The magnetic tunnel junctions are found to have distinctly different transport behavior depending on whether or not the length of the tubes is commensurate with a 3N+1 rule, with N the number of basic carbon repeat units along the nanotube length.

Keywords

Carbon nanotubeCondensed matter physicsMaterials scienceCarbon nanotube quantum dotNanotubeSpin (aerodynamics)Tunnel junctionTunnel magnetoresistanceMetalNanotechnologyFerromagnetismPhysicsQuantum tunnelling

Affiliated Institutions

Related Publications

Publication Info

Year
2000
Type
article
Volume
84
Issue
12
Pages
2682-2685
Citations
161
Access
Closed

External Links

View on DOI.org

Social Impact

Altmetric
PlumX Metrics

Social media, news, blog, policy document mentions

Citation Metrics

161
OpenAlex

Cite This

H. Mehrez, Jeremy Taylor, Hong Guo et al. (2000). Carbon Nanotube Based Magnetic Tunnel Junctions. Physical Review Letters , 84 (12) , 2682-2685. https://doi.org/10.1103/physrevlett.84.2682

Identifiers

DOI
10.1103/physrevlett.84.2682