Electronic Properties of Armchair Carbon Nanotubes : Bosonization Approach

Details Electronic Properties of Armchair Carbon Nanotubes : Bosonization Approach Electronic Properties of Armchair Carbon Nanotubes : Bosonization Approach

1998-05-09

arxiv.org/abs/cond-mat/9805106v2

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 1 figure, Revtex

Scientific paper

10.1103/PhysRevLett.82.374

The phase Hamiltonian of armchair carbon nanotubes at half-filling and away from it is derived from the microscopic lattice model by taking the long range Coulomb interaction into account. We investigate the low energy properties of the system using the renormalization group method. At half-filling, the ground state is a Mott insulator with spin gap, in which the bound states of electrons at different atomic sublattices are formed. The difference from the recent results [Phys. Rev. Lett. 79, 5082 (1997)] away half-filling is clarified.

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