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Band-gap change of carbon nanotubes: effect of small uniaxial and torsional strain

Physical Review B - Condensed Matter and Materials Physics, ISSN: 1550-235X, Vol: 60, Issue: 19, Page: 13874-13878
1999
  • 419
    Citations
  • 0
    Usage
  • 161
    Captures
  • 1
    Mentions
  • 0
    Social Media
Metric Options:   Counts1 Year3 Year

Metrics Details

  • Citations
    419
    • Citation Indexes
      419
  • Captures
    161
  • Mentions
    1
    • References
      1
      • Wikipedia
        1

Article Description

We use a simple picture based on the (Formula presented) electron approximation to study the band-gap variation of carbon nanotubes with uniaxial and torsional strain. We find (i) that the magnitude of slope of band gap versus strain has an almost universal behavior that depends on the chiral angle, (ii) that the sign of slope depends on the value of (Formula presented) and (iii) a novel change in sign of the slope of band gap versus uniaxial strain arising from a change in the value of the quantum number corresponding to the minimum band gap. Four orbital calculations are also presented to show that the (Formula presented) orbital results are valid. © 1999 The American Physical Society.

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