Comment on “Intrinsic electron transport properties of carbon nanotube Y- junctions” [Appl. Phys. Lett. 81, 5234 (2002)]

Andriotis, Antonis N.; Srivastava, Deepak; Menon, Madhu
August 2003
Applied Physics Letters;8/25/2003, Vol. 83 Issue 8, p1674
Academic Journal
Carbon nanotubes have received much attention for molecular electronic device applications due to their ability to form both metallic and semiconducting type nanotubes in experiments. The importance of three terminal T- and Y- junction nanotubes arises from the fact that these can provide the framework on which simple nanoscale carbon based transistor, power amplification, or analog logic devices could be designed and fabricated. Studies of electronic transport and possible device applications of nanotube T and Y junctions have taken on urgency because it is now feasible to fabricate multiterminal junctions of single-wall carbon nanotubes (SWCNs) via the electron or ion-beam irradiation induced nano-welding at the location of the junction. The rectification effect is entirely due to metallic contacts and that three-terminal geometry is not necessary for rectification. This is based on their calculation and comparison of a threefold symmetric SWCN Y junction case with a straight carbon nanotube. Transmission functions and local densities of states in the two cases were computed and compared.


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