Transverse-field-induced effects in carbon nanotubes

Wade Degottardi, Tzu Chieh Wei, Smitha Vishveshwara

Research output: Contribution to journalArticle

Abstract

We investigate the properties of conduction electrons in single-walled armchair carbon nanotubes in the presence of both transverse electric and magnetic fields. We find that these fields provide a controlled means of tuning low-energy band-structure properties such as inducing gaps in the spectrum, breaking various symmetries, and altering the Fermi velocities. We show that the fields can strongly affect electron-electron interactions yielding tunable Luttinger-liquid physics, the possibility of spin-charge-band separation, and a competition between spin-density-wave and charge-density-wave orders. For short tubes, the fields can alter boundary conditions and associated single-particle level spacings as well as quantum dot behavior.

Original languageEnglish (US)
Article number205421
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume79
Issue number20
DOIs
StatePublished - May 1 2009

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ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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