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Journal of Applied Physics / Volume 110 / Issue 2 / ARTICLES / Nanoscale Science and Design

J. Appl. Phys. 110, 024304 (2011); http://dx.doi.org/10.1063/1.3610511 (5 pages)

First-principles study of field emission from carbon nanotubes and graphene nanoribbons

Joseph A. Driscoll, Brandon Cook, Sergiy Bubin, and Kálmán Varga

Department of Physics and Astronomy, Vanderbilt University, Nashville, Tennessee 37235, USA

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(Received 17 April 2011; accepted 11 June 2011; published online 21 July 2011)

A real-space, real-time implementation of time-dependent density functional theory is used to study electron field emission from nanostructures. Carbon nanotubes and graphene nanoribbons are used as model systems. The calculations show that carbon nanotubes with iron adsorbates have spin-polarized emission currents. Graphene nanoribbons are shown to be good field emitters with spatial variation of the emission current influenced by the presence of passivating hydrogen.

© 2011 American Institute of Physics

Article Outline

  1. INTRODUCTION
  2. FORMALISM
  3. RESULTS
    1. Ionic motion
    2. Spin-polarized field emission from nanotubes
    3. Field emission from graphene nanoribbons
  4. SUMMARY

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KEYWORDS and PACS

Keywords

ab initio calculations, carbon nanotubes, density functional theory, electron field emission, graphene, spin polarised transport

PACS

  • 79.70.+q

    Field emission, ionization, evaporation, and desorption

  • 71.15.Mb

    Density functional theory, local density approximation, gradient and other corrections

  • 72.25.-b

    Spin polarized transport

ARTICLE DATA

Digital Object Identifier
http://dx.doi.org/10.1063/1.3610511

PUBLICATION DATA

ISSN

0021-8979 (print)  
1089-7550 (online)

Publisher

$abstract.society.value is a Member of CrossRef American Institute of Physics

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