Far- and mid-infrared anisotropy of magnetically aligned single-wall carbon nanotubes studied with synchrotron radiation

K. Kamarás, K. Thirunavukkuarasu, C. A. Kuntscher, M. Dressel, F. Simon, H. Kuzmany, D. A. Walters, D. A. Moss

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

We performed polarized infrared reflectivity measurements on magnetically oriented carbon nanotubes using conventional light sources as well as synchrotron radiation. A strong anisotropy in the far-infrared spectral range was found, indicating preferred orientation of metallic tubes. Much less effect is seen in the spectral region typical of semiconducting tubes. We propose an explanation based on preferred orientation of metallic tubes, polarization-dependent dipole selection rules, and possible doping effects in these materials.

Original languageEnglish
Pages (from-to)35-38
Number of pages4
JournalInfrared Physics and Technology
Volume49
Issue number1-2
DOIs
Publication statusPublished - Sep 1 2006

Keywords

  • Carbon nanotubes
  • Infrared spectroscopy
  • Raman spectroscopy
  • Synchrotron radiation

ASJC Scopus subject areas

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

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