Intrinsic electron transport properties of carbon nanotube Y-junctions
- 30 December 2002
- journal article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 81 (27), 5234-5236
- https://doi.org/10.1063/1.1533842
Abstract
The electron transport properties of three-terminal carbon-nanotube junctions are investigated within the Landauer theory of quantum conductance. Using a realistic tight-binding Hamiltonian, we demonstrate that the experimentally observed rectifying behavior is not an intrinsic property of the junction, but rather of the contact geometry. When semiconducting nanotubes are connected to metallic leads, nontransmitting states are induced at the nanotube–metal interface, leading to asymmetric transmission curves and potentially rectifying behavior of the nanodevice.Keywords
This publication has 33 references indexed in Scilit:
- Mechanical and Electrical Properties of NanotubesAnnual Review of Materials Research, 2002
- Transport properties of single-wall carbon nanotube Y junctionsPhysical Review B, 2002
- real-space method forab initioquantum transport calculations: Application to carbon nanotube–metal contactsPhysical Review B, 2001
- Structural and electronic properties of carbon nanotube tapersPhysical Review B, 2001
- Topological structure of Y-junction carbon nanotubesMaterials Letters, 2000
- Schottky Barriers in Carbon Nanotube HeterojunctionsPhysical Review Letters, 2000
- Electronic transport in extended systems: Application to carbon nanotubesPhysical Review B, 1999
- Carbon Nanotube “T Junctions”: Nanoscale Metal-Semiconductor-Metal Contact DevicesPhysical Review Letters, 1997
- Constraints on small graphitic helicesPhysical Review B, 1994
- Matching methods for single and multiple interfaces: Discrete and continuous mediaPhysics Reports, 1991