Proximity and anomalous field-effect characteristics in double-wall carbon nanotubes

Abstract

Proximity effect on field-effect characteristic (FEC) in double-wall carbon nanotubes (DWCNTs) is investigated. In a semiconductor-metal (S-M) DWCNT, the penetration of electron wavefunctions in the metallic shell to the semiconducting shell turns the original semiconducting tube into a metal with a non-zero local density of states at the Fermi level. By using a two-band tight-binding model on a ladder of two legs, it is demonstrated that anomalous FEC observed in so-called S-M type DWCNTs can be fully understood by the proximity effect of metallic phases.

4 pages, 4 figures

References in corpus (5)

• Fractional quantum conductance in carbon nanotubes
• Electronic states and quantum transport in double-wall carbon nanotubes
• Quantum Conductance Steps in Solutions of Multiwalled Carbon Nanotubes
• Helicity and electron correlation effects on transport properties of double-walled carbon nanotubes
• The level shifting induced negative magnetoresistance in the nearest-neighbor hopping conduction

Cited by in corpus (4)

• New Galvanomagnetic Effects of Polycrystalline Magnetic Films
• Thermal spin current and spin accumulation at ferromagnetic insulator/nonmagnetic metal interface
• Inverse Square-Root Field Dependence of Conductivity in Organic Field-Effect Transistors
• Schottky-barrier double-walled carbon nanotube field-effect transistors