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Title: Realistic-contact-induced enhancement of rectifying in carbon-nanotube/graphene-nanoribbon junctions

Carbon-nanotube/graphene-nanoribbon junctions were recently fabricated by the controllable etching of single-walled carbon-nanotubes [Wei et al., Nat. Commun. 4, 1374 (2013)] and their electronic transport properties were studied here. First principles results reveal that the transmission function of the junctions show a heavy dependence on the shape of contacts, but rectifying is an inherent property which is insensitive to the details of contacts. Interestingly, the rectifying ratio is largely enhanced in the junction with a realistic contact and the enhancement is insensitive to the details of contact structures. The stability of rectifying suggests a significant feasibility to manufacture realistic all-carbon rectifiers in nanoelectronics.
Authors:
 [1] ;  [2] ;  [3] ; ; ;  [1]
  1. School of Physics and Microelectronics Science, Hunan University, Changsha 410082 (China)
  2. (China)
  3. School of Optoelectronic Information, University of Electronic Science and Technology of China, Chengdu, Sichuan 610054 (China)
Publication Date:
OSTI Identifier:
22261647
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 104; Journal Issue: 10; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 77 NANOSCIENCE AND NANOTECHNOLOGY; ETCHING; GRAPHENE; NANOTUBES; SEMICONDUCTOR JUNCTIONS