Journal
PHYSICAL REVIEW B
Volume 83, Issue 8, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.83.085401
Keywords
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Funding
- DFG [KO 2235/3]
- Kompetenznetz Funktionelle Nanostrukturen III of the Baden-Wurttemberg Stiftung (Germany)
- Swiss NSF
- HGSFP of the University of Heidelberg
- CQD of the University of Heidelberg
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We analyze the nonequilibrium transport properties of a quantum dot with a harmonic degree of freedom (Holstein phonon) coupled to metallic leads, and derive its full counting statistics. By using the Lang-Firsov (polaron) transformation, we construct a diagrammatic scheme to calculate the cumulant generating function. The electron-phonon interaction is taken into account exactly, and the employed approximation represents a summation of a diagram subset with respect to the tunneling amplitude. By comparison to Monte Carlo data, the formalism is shown to capture the basic properties of the strong-coupling regime.
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