Magnetoresistance of ferromagnetically contacted carbon nanotubes

B. W. Alphenaar, K. Tsukagoshi, M. Wagner

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Magnetoresistance measurements of multi-walled carbon nanotubes having one or two ferromagnetic contacts are compared. Nanotubes with two cobalt contacts show hysteretic switching in the magnetoresistance, with a maximum change of 9% at 4.2 K, while nanotubes with one cobalt contact and one platinum/gold contact show no magnetoresistance switching. This provides further evidence for coherent transport of electron spin through the multi-walled nanotube. In addition, the magnetoresistance ratio in the ferromagnetic nanotube device is calculated for a two-band ballistic model, and gives a maximum value of 25%.

Original languageEnglish
Pages (from-to)499-504
Number of pages6
JournalPhysica E: Low-Dimensional Systems and Nanostructures
Volume10
Issue number1-3
DOIs
Publication statusPublished - 2001 May 1
Externally publishedYes

Keywords

  • Carbon nanotubes
  • Ferromagnets
  • Spin
  • Spin eectronics

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics

Fingerprint Dive into the research topics of 'Magnetoresistance of ferromagnetically contacted carbon nanotubes'. Together they form a unique fingerprint.

  • Cite this