Magneto-optical studies of single-wall carbon nanotubes

I. B. Mortimer*, Lain-Jong Li, R. A. Taylor, G. L.J.A. Rikken, O. Portugall, R. J. Nicholas

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

21 Scopus citations

Abstract

We report a detailed study of the magnetophotoluminescence of single-wall carbon nanotubes at various temperatures in fields up to 58 T. We give direct experimental evidence of the diameter dependence of the Aharanov-Bohm phase-induced band gap shifts. Large increases in intensity are produced by the magnetic field at low temperatures which are also significantly chiral index [(n,m)] dependent. These increases are attributed to the magnetic field induced mixing of the wave functions of the exciton states. A study of the emission from nanotubes aligned perpendicular to the applied magnetic field shows even larger field-induced photoluminescence intensity enhancements and unexpectedly large redshifts in band gap energies, not predicted theoretically.

Original languageEnglish (US)
Article number085404
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume76
Issue number8
DOIs
StatePublished - Aug 3 2007

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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