Bandgap Change of Carbon Nanotubes : Effect of Small Uniaxial and Torsional Strain

@inproceedings{Yang1998BandgapCO,
  title={Bandgap Change of Carbon Nanotubes : Effect of Small Uniaxial and Torsional Strain},
  author={Liu Yang and M. P. Anantram and Jie Han and Jian Ping Lu},
  year={1998}
}
We use a simple picture based on the π electron approximation to study the bandgap variation of carbon nanotubes with uniaxial and torsional strain. We find (i) that the magnitude of slope of bandgap versus strain has an almost universal behaviour that depends on the chiral angle, (ii) that the sign of slope depends on the value of (n − m) mod 3 and (iii) a novel change in sign of the slope of bandgap versus uniaxial strain arising from a change in the value of the quantum number corresponding… CONTINUE READING
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