Modeling extended contacts for nanotube and graphene devices

Nemec, Norbert and Tomanek, David and Cuniberti, Gianaurelio (2008) Modeling extended contacts for nanotube and graphene devices. PHYSICAL REVIEW B, 77 (12): 125420. ISSN 1098-0121,

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Abstract

Carrier injection into carbon nanotubes and graphene nanoribbons, contacted by a metal coating over an arbitrary length, is studied by various means: Minimal models allow for exact analytic solutions, which can be transferred to the original system with high precision. Microscopic ab initio calculations of the electronic structure at the carbon-metal interface allow us to extract-for Ti and Pd as contacting materials-realistic parameters, which are then used in large scale tight-binding models for transport calculations. The results are shown to be robust against nonepitaxially grown electrodes and general disorder at the interface, as well as various refinements of the model.

Item Type: Article
Uncontrolled Keywords: FIELD-EFFECT TRANSISTORS; CARBON NANOTUBES; MOLECULAR ELECTRONICS; OHMIC CONTACTS; TRANSPORT; CONDUCTANCE; STATE; EDGE;
Subjects: 500 Science > 530 Physics
Divisions: Physics > Institute of Theroretical Physics
Depositing User: Dr. Gernot Deinzer
Date Deposited: 09 Nov 2020 08:44
Last Modified: 09 Nov 2020 08:44
URI: https://pred.uni-regensburg.de/id/eprint/31340

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