Conductance and thermoelectric power in carbon nanotubes with magnetic impurities

Details Conductance and thermoelectric power in carbon nanotubes with magnetic impurities Conductance and thermoelectric power in carbon nanotubes with magnetic impurities

2007-03-14

arxiv.org/abs/cond-mat/0703373v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

5 pages, 5 figures

Scientific paper

By introducing a normal self-energy to incorporate the effects of magnetic impurities, Kondo effects in single-walled metallic carbon nanotubes are investigated within the Anderson model and Landauer formula. Magnetic impurities induce Kondo resonance and bring a valley of conductance unction near the Fermi level. The conductance of the nanotube increases with the temperature in the low temperature range. Thermoelectric power induced by magnetic impurities is gotten from Mott relation, and the calculations indicate its dependence on the temperature could interpret the experiment well.

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