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arXiv · 0708.1486

The low energy spectrum of finite size metallic SWNTs

Leonhard Mayrhofer·Milena Grifoni
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Abstract

The electronic spectrum of metallic finite-size single-wall carbon nanotubes at low energies is derived. It is based on a tight-binding description for the interacting p_{z} electrons. Not only the forward scattering parts of the Coulomb interaction, which are diagonalized by bosonization, are considered, but also all other processes becoming relevant for small diameter tubes. As a consequence of the substructure of the underlying lattice, a spin 1 triplet is found as ground state if the exchange splitting is larger than the branch mismatch, a spin 0 singlet otherwise. Moreover the excitation spectrum is calculated.

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Leonhard Mayrhofer, Milena Grifoni. 2007-08-10. The low energy spectrum of finite size metallic SWNTs. https://doi.org/10.1140/epjb/e2008-00204-0

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