AC-Conductance through an Interacting Quantum Dot
arXiv:0910.2844 · doi:10.1103/PhysRevB.81.115319
Abstract
We investigate the linear ac-conductance for tunneling through an arbitrary interacting quantum dot in the presence of a finite dc-bias. In analogy to the well-known Meir-Wingreen formula for the dc case, we are able to derive a general formula for the ac-conductance. It can be expressed entirely in terms of local correlations on the quantum dot, in the form of a Keldysh block diagram with four external legs. We illustrate the use of this formula as a starting point for diagrammatic calculations by considering the ac-conductance of the noninteracting resonant level model and deriving the result for the lowest order of electron-phonon coupling. We show how known results are recovered in the appropriate limits.
4+ pages, 4 figures
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Cited by in corpus (7)
- Nonequilibrium quantum systems with electron-phonon interactions: Transient dynamics and approach to steady state
- Bias-Controlled Selective Excitation of Vibrational Modes in Molecular Junctions: A Route Towards Mode-Selective Chemistry
- Sub-Ohmic to super-Ohmic crossover behavior in nonequilibrium quantum systems with electron-phonon interactions
- Magnetic field effects on the finite-frequency noise and ac conductance of a Kondo quantum dot out of equilibrium
- AC transport and full-counting statistics of molecular junctions in the weak electron-vibration coupling regime
- Effects of coupling to vibrational modes on the ac conductance of molecular junctions
- Out-of-equilibrium fluctuation-dissipation relations verified by the electrical and thermoelectrical ac-conductances in a quantum dot