A theory of superconductivity in multi-walled carbon nanotubes

Details A theory of superconductivity in multi-walled carbon nanotubes A theory of superconductivity in multi-walled carbon nanotubes

2006-03-10

arxiv.org/abs/cond-mat/0603292v2

Phys. Rev. B 74, 201403 (2006)

Physics

Condensed Matter

Superconductivity

4 pages, 2 figures, replaced with revised version

Scientific paper

10.1103/PhysRevB.74.201403

We devise an approach to describe the electronic instabilities of doped multi-walled nanotubes, where each shell has in general a manifold of Fermi points. Our analysis relies on the scale dependence of the different scattering processes, showing that a pairing instability arises for a large enough number of Fermi points as a consequence of their particular geometric arrangement. The instability is enhanced by the tunneling of Cooper pairs between nearest shells, giving rise to a transition from the Luttinger liquid to a superconducting state in a wide region of the phase diagram.

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