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

Jie Lu·Sun Yin·Z. Z. Sun·X. R. Wang·L. M. Peng
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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.

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Jie Lu, Sun Yin, Z. Z. Sun, X. R. Wang, L. M. Peng. 2006-03-22. Proximity and anomalous field-effect characteristics in double-wall carbon nanotubes. https://doi.org/10.1063/1.2435927

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