Effect of laser on thermopower of chiral carbon nanotube

Details Effect of laser on thermopower of chiral carbon nanotube Effect of laser on thermopower of chiral carbon nanotube

2011-04-11

arxiv.org/abs/1104.1913v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

15 pages, 10 figures

Scientific paper

An investigation of laser stimulated thermopower in chiral CNT is presented. The thermopower of a chiral CNT is calculated using a tractable analytical approach. This is done by solving the Boltzmann kinetic equation with energy dispersion relation obtained in the tight binding approximation to determine the electrical and thermal properties of chiral carbon nanotubes. The differential thermoelectric power {\alpha} along the circumferential and axial axes are obtained. The results obtained are numerically analyzed and {\alpha} is found to oscillate in the presence of laser radiations. We have also noted that Laser source above 4.6 x 107V/m lowered the thermopower otherwise there is no change. Varying delta s and delta z the thermopower changes from positive to negative.

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