Significant reduction of the triggering electric field for half-metallicity in hydrogenated carbon nanotubes by optimized field direction
- Authors
- Lee, Kyu Won; Lee, Cheol Eui
- Issue Date
- 7월-2013
- Publisher
- ELSEVIER SCIENCE BV
- Keywords
- Half-metallic carbon nanotubes; Hydrogenated carbon nanotubes; Graphene nanoribbons; Density functional theory
- Citation
- CURRENT APPLIED PHYSICS, v.13, no.5, pp.894 - 896
- Indexed
- SCIE
SCOPUS
KCI
- Journal Title
- CURRENT APPLIED PHYSICS
- Volume
- 13
- Number
- 5
- Start Page
- 894
- End Page
- 896
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/102868
- DOI
- 10.1016/j.cap.2013.01.026
- ISSN
- 1567-1739
- 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. (C) 2013 Elsevier B. V. All rights reserved.
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Collections - College of Science > Department of Physics > 1. Journal Articles
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