Many body effects in finite metallic carbon nanotubes

Details Many body effects in finite metallic carbon nanotubes Many body effects in finite metallic carbon nanotubes

2005-01-10

arxiv.org/abs/cond-mat/0501216v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

5 pages

Scientific paper

10.1103/PhysRevLett.94.116804

The non homogeneity of the charge distribution in a carbon nanotube leads to the formation of an excitonic resonance, in a similar way to the one observed in X-ray absorption in metals. As a result, a positive anomaly at low bias appears in the tunnelling density of states. This effect depends on the screening of the electron--electron interactions by metallic gates, and it modifies the coupling of the nanotube to normal and superconducting electrodes.

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