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

Jie Lü | Zendy; Sun Yin | Zendy; LianMao Peng | Zendy; Z. Z. Sun | Zendy; X. R. Wang | Zendy

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

Author(s) -

Jie Lü,

Sun Yin,

LianMao Peng,

Z. Z. Sun,

X. R. Wang

Publication year - 2007

Publication title -

applied physics letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.182

H-Index - 442

eISSN - 1077-3118

pISSN - 0003-6951

DOI - 10.1063/1.2435927

Subject(s) - carbon nanotube , fermi level , metal , condensed matter physics , materials science , semiconductor , wave function , penetration (warfare) , electron , shell (structure) , nanotechnology , atomic physics , optoelectronics , physics , composite material , quantum mechanics , operations research , engineering , metallurgy

Proximity effect on field-effect characteristic (FEC) in double-wall carbonnanotubes (DWCNTs) is investigated. In a semiconductor-metal (S-M) DWCNT, thepenetration of electron wavefunctions in the metallic shell to thesemiconducting shell turns the original semiconducting tube into a metal with anon-zero local density of states at the Fermi level. By using a two-bandtight-binding model on a ladder of two legs, it is demonstrated that anomalousFEC observed in so-called S-M type DWCNTs can be fully understood by theproximity effect of metallic phases.Comment: 4 pages, 4 figure

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