Effect of an external magnetic field on Landau damping in carbon nanotubes |
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Authors: | Yu. I. Sezonov Yu. V. Perepelkina |
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Affiliation: | (1) Moscow State Institute of Electronics and Mathematics (Technical University), Moscow, 109028, Russia |
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Abstract: | A quantum-mechanical formula for describing the dependence of the longitudinal permittivity of a nanotube on its characteristic parameters and the magnetic field strength was derived. The imaginary part of the permittivity was isolated, and the cases of a Boltzmann and degenerate electron gas were examined. For a degenerate electron gas, asymptotic expressions for absorption in the short- and long-wave ranges were obtained. It was demonstrated that the absorption coefficient for a longitudinal electromagnetic wave exhibits Aharonov-Bohm oscillations. |
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