Physics – Condensed Matter
Scientific paper
1995-06-19
Phys. Rev. Lett. 76, 1715 (1996)
Physics
Condensed Matter
4 pages, revtex, 5 postscript figures, submitted to Phys. Rev. Lett
Scientific paper
10.1103/PhysRevLett.76.1715
We study resonant tunneling through a quantum dot with one degenerate level in the presence of a strong Coulomb repulsion and a bosonic environment. Using a real-time approach we calculate the spectral density and the nonlinear current within a conserving approximation. The spectral density shows a multiplet of Kondo peaks split by the transport voltage and boson frequencies. As a consequence we find a zero-bias anomaly in the differential conductance which can show a local maximum or minimum depending on the level position. The results are compared with recent experiments.
Konig Jurgen
Schoeller Herbert
Schön Gerd
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