Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
2004-03-28
Phys.Rev.B 69, 161402(R) (2004)
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
To appear in Phys.Rev.B Rapid Communications. Color figures available in PRB online version
Scientific paper
10.1103/PhysRevB.69.161402
We present an atomistic self-consistent tight-binding study of the electronic and transport properties of metal-semiconducting carbon nanotube interfaces as a function of the nanotube channel length when the end of the nanotube wire is buried inside the electrodes. We show that the lineup of the nanotube band structure relative to the metal Fermi-level depends strongly on the metal work function but weakly on the details of the interface. We analyze the length-dependent transport characteristics, which predicts a transition from tunneling to thermally-activated transport with increasing nanotube channel length.
Ratner Mark A.
Xue Yongqiang
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