Weak Coulomb blockade effect in quantum dots

Details Weak Coulomb blockade effect in quantum dots Weak Coulomb blockade effect in quantum dots

2004-09-09

arxiv.org/abs/cond-mat/0409244v2

Phys. Rev. Lett. 94, 136801 (2005)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 2 figures. Published version

Scientific paper

10.1103/PhysRevLett.94.136801

We develop the general non-equilibrium theory of transport through a quantum dot, including Coulomb Blockade effects via a 1/N expansion, where N is the number of scattering channels. At lowest order we recover the Landauer formula for the current plus a self-consistent equation for the dot potential. We obtain the leading corrections and compare with earlier approaches. Finally, we show that to leading and next leading order in 1/N there is no interaction correction to the weak localization, in contrast to previous theories, but consistent with experiments by Huibers et al. [Phys. Rev. Lett. 81, 1917 (1998)], where N=4.

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