Yongqiang Xue and Mark A Ratner 2005 Nanotechnology 16 5 doi:10.1088/0957-4484/16/1/002
Electron transport in semiconducting carbon nanotubes with hetero-metallic contacts
Yongqiang Xue1,3 and Mark A Ratner2
Show affiliationsWe present an atomistic self-consistent study of the electronic and transport properties of semiconducting carbon nanotubes in contact with metal electrodes of different work functions, which shows simultaneous electron and hole doping inside the nanotube junction through contact-induced charge transfer. We find that the band lineup in the nanotube bulk region is determined by the effective work function difference between the nanotube channel and source/drain electrodes, while electron transmission through the SWNT junction is affected by the local band structure modulation at the two metal–nanotube interfaces, leading to an effective decoupling of interface and bulk effects in electron transport through nanotube junction devices.
- PACS
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73.30.+y Surface double layers, Schottky barriers, and work functions
- Subjects
- Dates
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Issue 1 (January 2005)
Received 4 October 2004, in final form 2 November 2004
Published 30 November 2004
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Electron transport in semiconducting carbon nanotubes with hetero-metallic contacts
Yongqiang Xue and Mark A Ratner 2005 Nanotechnology 16 5
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