Reconstruction and electronic properties of interface between carbon nanotubes and ferromagnetic Co electrodes

Nguyen Tien Cuong, Mohd Ambri Mohamed, Nobuo Otsuka, Dam Hieu Chi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The reconstruction and electronic structures of the interfaces between single wall carbon nano tubes and ferromagnetic Co electrodes were studied in the framework of density functional theory. The obtained results revealed that there is a strong interaction between carbon nano tubes and Co electrodes. At the interface region, Top layers of Co surface have been significantly reconstructed. The nature of chemical bonds at the Co-C interface is covalent bonding. The increase of the electron density occurs mainly at the interface where a substantial concentration of electron accumulates in Co-C bonds. A small amount of charge transfer from Co electrode to carbon nano tube junction was found. In addition, the spin polarization of Co atoms at the interface region has been suppressed due to the interaction with a carbon nano tube. It implies that the spin transport through this layer is low, which results in the small hysteretic magneto-resistance of carbon nano tube devices.

Original languageEnglish
Title of host publicationApplied Mechanics and Materials
Pages183-187
Number of pages5
Volume229-231
DOIs
Publication statusPublished - 2012
Externally publishedYes
Event4th International Conference on Mechanical and Electrical Technology, ICMET 2012 - Kuala Lumpur
Duration: 24 Jul 201226 Jul 2012

Publication series

NameApplied Mechanics and Materials
Volume229-231
ISSN (Print)16609336
ISSN (Electronic)16627482

Other

Other4th International Conference on Mechanical and Electrical Technology, ICMET 2012
CityKuala Lumpur
Period24/7/1226/7/12

Fingerprint

Electronic properties
Carbon nanotubes
Electrodes
Carbon
Spin polarization
Chemical bonds
Magnetoresistance
Electronic structure
Density functional theory
Carrier concentration
Charge transfer
Atoms
Electrons

Keywords

  • Carbon nanotubes
  • Cnts
  • Co electrodes
  • Ferromagnetic electrodes
  • Fisrt-principle calculatons
  • Reconstruction of interface between cnts and ferromagnetic electrodes

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Cuong, N. T., Mohamed, M. A., Otsuka, N., & Chi, D. H. (2012). Reconstruction and electronic properties of interface between carbon nanotubes and ferromagnetic Co electrodes. In Applied Mechanics and Materials (Vol. 229-231, pp. 183-187). (Applied Mechanics and Materials; Vol. 229-231). https://doi.org/10.4028/www.scientific.net/AMM.229-231.183

Reconstruction and electronic properties of interface between carbon nanotubes and ferromagnetic Co electrodes. / Cuong, Nguyen Tien; Mohamed, Mohd Ambri; Otsuka, Nobuo; Chi, Dam Hieu.

Applied Mechanics and Materials. Vol. 229-231 2012. p. 183-187 (Applied Mechanics and Materials; Vol. 229-231).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Cuong, NT, Mohamed, MA, Otsuka, N & Chi, DH 2012, Reconstruction and electronic properties of interface between carbon nanotubes and ferromagnetic Co electrodes. in Applied Mechanics and Materials. vol. 229-231, Applied Mechanics and Materials, vol. 229-231, pp. 183-187, 4th International Conference on Mechanical and Electrical Technology, ICMET 2012, Kuala Lumpur, 24/7/12. https://doi.org/10.4028/www.scientific.net/AMM.229-231.183
Cuong NT, Mohamed MA, Otsuka N, Chi DH. Reconstruction and electronic properties of interface between carbon nanotubes and ferromagnetic Co electrodes. In Applied Mechanics and Materials. Vol. 229-231. 2012. p. 183-187. (Applied Mechanics and Materials). https://doi.org/10.4028/www.scientific.net/AMM.229-231.183
Cuong, Nguyen Tien ; Mohamed, Mohd Ambri ; Otsuka, Nobuo ; Chi, Dam Hieu. / Reconstruction and electronic properties of interface between carbon nanotubes and ferromagnetic Co electrodes. Applied Mechanics and Materials. Vol. 229-231 2012. pp. 183-187 (Applied Mechanics and Materials).
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