Aharonov-Bohm oscillations and resonant tunneling in strongly correlated quantum dots

Details Aharonov-Bohm oscillations and resonant tunneling in strongly correlated quantum dots Aharonov-Bohm oscillations and resonant tunneling in strongly correlated quantum dots

1995-11-24

arxiv.org/abs/cond-mat/9511119v1

Physics

Condensed Matter

RevTex, 5 pages, 3 PostScript figures. Accepted for publication in Phys. Rev. Lett

Scientific paper

10.1103/PhysRevLett.76.114

We investigate Aharonov-Bohm oscillations of the current through a strongly correlated quantum dot embedded in an arbitrary scattering geometry. Resonant-tunneling processes lead to a flux-dependent renormalization of the dot level. As a consequence we obtain a fine structure of the current oscillations which is controlled by quantum fluctuations. Strong Coulomb repulsion leads to a continuous bias voltage dependent phase shift and, in the nonlinear response regime, destroys the symmetry of the differential conductance under a sign change of the external flux.

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