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Title: Graphene nanoribbon molecular sensor based on inelastic transport

Results of phonon-assisted inelastic quantum transport calculations are presented for graphene nanoribbons. We consider a single molecule attached to a carbon atom and describe the electronic structure by a tight-binding model, taking into account a local phonon mode associated with the attached molecule characteristic vibration. The calculated transmission spectra reveal a striking sensitivity for molecules attached to the edges of asymmetric zigzag graphene nanoribbons. Our results show that the differential conductance may be used to identify the presence as well as the characteristic vibration frequency of a target molecule at finite temperatures.
Authors:
 [1] ; ;  [2]
  1. School of Physics, Trinity College Dublin, Dublin 2 (Ireland)
  2. Instituto de Física, Universidade Federal Fluminense SN, 24210-360 Niterói-RJ (Brazil)
Publication Date:
OSTI Identifier:
22261582
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 104; Journal Issue: 14; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
77 NANOSCIENCE AND NANOTECHNOLOGY; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ELECTRONIC STRUCTURE; GRAPHENE; MOLECULES; NANOSTRUCTURES; PHONONS; SENSORS