Authors: Rahul Prajesh Pankaj B Agarwal Ajay Agarwal
Publish Date: 2012/09/20
Volume: 2, Issue: 4, Pages: 223-226
Abstract
Contact resistance has always been an issue for semiconducting carbon nanotubes CNT This paper presents a comparative study on openended semiconducting carbon nanotube 4 0 twoprobe systems with metal electrodes of platinum copper and gold The local density of states and transmission coefficients has been calculated to explain the electronic structure and transmission properties of twoprobe systems Contact resistance for each twoprobe system has been derived from their current–voltage characteristics Calculations are based on firstprinciple quantum mechanical density functional matrix Green’s function methods and Landauer–Buttiker formula Contact resistance is calculated to be highest for the Au electrode while it is least for the Pt electrode
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