Aharonov-Bohm oscillations and resonant tunneling in strongly correlated quantum dots
arXiv:cond-mat/9511119 · doi:10.1103/PhysRevLett.76.114
Abstract
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.
RevTex, 5 pages, 3 PostScript figures. Accepted for publication in Phys. Rev. Lett
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