Accessing nanotube bands via crossed electric and magnetic fields

Wade Degottardi, Tzu Chieh Wei, Victoria Fernández, 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 mutually orthogonal electric and magnetic fields transverse to the tube's axis. We find that the fields give rise to an asymmetric dispersion in the right- and left-moving electrons along the tube as well as a band-dependent interaction. We predict that such a nanotube system would exhibit spin-band-charge separation and a band-dependent tunneling density of states. We show that in the quantum dot limit, the fields serve to completely tune the quantum states of electrons added to the nanotube. For each of the predicted effects, we provide examples and estimates that are relevant to experiment.

Original languageEnglish (US)
Article number155411
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume82
Issue number15
DOIs
StatePublished - Oct 7 2010

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Nanotubes
nanotubes
Electric fields
Magnetic fields
electric fields
Electrons
magnetic fields
tubes
Single-walled carbon nanotubes (SWCN)
polarization (charge separation)
conduction electrons
Semiconductor quantum dots
electrons
carbon nanotubes
quantum dots
estimates
Experiments
interactions

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Accessing nanotube bands via crossed electric and magnetic fields. / Degottardi, Wade; Wei, Tzu Chieh; Fernández, Victoria; Vishveshwara, Smitha.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 82, No. 15, 155411, 07.10.2010.

Research output: Contribution to journalArticle

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