Spin transport in disordered single-wall carbon nanotubes contacted to ferromagnetic leads

Abstract

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.

9 pages, 5 figures, presented at the European Conference PHYSICS OF MAGNETISM 2005, Poznan, Poland

References in corpus (4)

• Spintronics: Fundamentals and applications
• Electrical Spin Injection in Multi-Wall carbon NanoTubes with transparent ferromagnetic contacts
• Giant magnetoresistance of multiwall carbon nanotubes: modeling the tube/ferromagnetic-electrode burying contact
• Spin-polarized transport through carbon nanotubes

Cited by in corpus (4)

• Theoretical studies of spin-dependent electrical transport through carbon nanotbes
• The Functional Integral formulation of the Schrieffer-Wolff transformation
• Treatise on the Resolution of the Diamond Problem after 200 Years
• The Resolution of the Diamond Problem After 200 Years: Phonon, Roton and Magnon Induced Spin-Orbital Dynamics, Subshell Rehybridization and Shell Rotation for the Little Effect