Significant reduction of the triggering electric field for half-metallicity in hydrogenated carbon nanotubes by optimized field direction

Kyu Won Lee, Cheol Eui Lee

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

We have investigated the half-metallicity in hydrogenated carbon nanotubes under an electric field as a function of the electric field direction by using the density functional theory calculation. We found that the electric field required for the half-metallicity can be significantly reduced by controlling the field direction and the reduction rate increases with the nanotube diameter. The field direction effect can be understood in a simple model based on the electrostatic potential difference between the spatially-separated edges.

Original languageEnglish
Pages (from-to)894-896
Number of pages3
JournalCurrent Applied Physics
Volume13
Issue number5
DOIs
Publication statusPublished - 2013 Jul

Bibliographical note

Funding Information:
This work was supported by the National Research Foundation of Korea (NRL Program 2012-0006259 , Cyclotron Users Program 2012029495 , and No. 20100-029418 ).

Keywords

  • A. Half-metallic carbon nanotubes
  • B. Hydrogenated carbon nanotubes
  • C. Graphene nanoribbons
  • D. Density functional theory

ASJC Scopus subject areas

  • General Materials Science
  • General Physics and Astronomy

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