Bulk and boundary zero-bias anomaly in multi-wall carbon nanotubes
arXiv:cond-mat/0101246 · doi:10.1103/PhysRevLett.87.066401
Abstract
We compute the tunneling density of states of doped multi-wall nanotubes including disorder and electron-electron interactions. A non-conventional Coulomb blockade reflecting nonperturbative Altshuler-Aronov-Lee power-law zero-bias anomalies is found, in accordance with recent experimental results. The presence of a boundary implies a universal doubling of the boundary exponent in the diffusive limit.
4 pages, to appear in PRL (revised version)
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