Conductance of a copper-nanotube bundle interface: Impact of interface geometry and wave-function interference | Zendy

Steven Compernolle | Zendy; Geoffrey Pourtois | Zendy; Bart Sorée | Zendy; Wim Magnus | Zendy; Liviu F. Chibotaru | Zendy; Arnout Ceulemans | Zendy

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Conductance of a copper-nanotube bundle interface: Impact of interface geometry and wave-function interference

Author(s) -

Steven Compernolle,

Geoffrey Pourtois,

Bart Sorée,

Wim Magnus,

Liviu F. Chibotaru,

Arnout Ceulemans

Publication year - 2008

Publication title -

physical review b

Language(s) - English

Resource type - Journals

eISSN - 1538-4489

pISSN - 1098-0121

DOI - 10.1103/physrevb.77.193406

Subject(s) - conductance , materials science , bundle , carbon nanotube , interference (communication) , copper , metal , condensed matter physics , nanotube , ab initio , wave function , nanotechnology , physics , channel (broadcasting) , atomic physics , composite material , quantum mechanics , telecommunications , computer science , metallurgy

Carbon nanotubes (CNTs) are a promising candidate to replace copper interconnects. An ab initio study is presented on the conductance of a closed-packed bundle of very narrow metallic (4,0) CNTs, which is vertically placed on a Cu (100) surface. The intertube interactions have no significant impact on the conductance. The conductance is highly dependent on the exact geometry of the interface, which is varying between 0.6 and 1.8 conductance quanta, while the theoretical maximum of the CNT is three conductance quanta. The wave-function interference can lead to conductance suppression when the packing is too high. Both features are explained by using an orbital picture.status: publishe

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