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Operation Mechanism of Double-Walled Carbon Nanotubes Transistors Investigated By ab initio Calculations

Lan Hai-Ping and Zhang Shuang

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CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES

Recently, a new switching characteristic of double-walled carbon nanotubes (DWNTs) transistors is found in during experiments. We carry out a series of ab intio calculations on DWNTs' electronic properities, together with verification on the electronic response under the electric field. Our results reveal that the peculiar energy states relation in DWNTs and related contact modes should account for the distinct switching behavior of DWNT transistors. We believe these results have important implications in the fabrication and understanding of electronic devices with DWNTs.


PACS

85.35.Kt Nanotube devices

73.22.-f Electronic structure of nanoscale materials: clusters, nanoparticles, nanotubes, and nanocrystals

71.15.-m Methods of electronic structure calculations

73.63.Fg Nanotubes

85.30.Tv Field effect devices

Subjects

Condensed matter: electrical, magnetic and optical

Electronics and devices

Semiconductors

Nanoscale science and low-D systems

Dates

Issue 11 (November 2009)

Received 11 January 2009



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