Kondo resonance in an ac driven quantum dot subjected to finite bias
arXiv:0804.3967 · doi:10.1016/j.ssc.2008.08.014
Abstract
We employ the time-dependent non-crossing approximation to study the time averaged conductance for a single electron transistor in the Kondo regime when the dot level is sinusoidally driven from its equilibrium position by means of a gate voltage in finite bias. We find that the average conductance exhibits significant deviation from the monotonous reduction when the applied bias is equal to the driving frequency of the dot level. We investigate the effect of the temperature and the driving frequency on the observed enhancement. We attribute this behaviour to the overlap of the satellite Kondo peaks with the split Kondo resonances formed at each lead's Fermi level. We display the spectral function to put our interpretation into more rigorous footing.
arXiv comment5 pages, 4 figures
References in corpus (19)
- Kondo Physics in a Single Electron Transistor
- Time-dependent transport in interacting and non-interacting mesoscopic systems
- A Tunable Kondo Effect in Quantum Dots
- From the Kondo Regime to the Mixed-Valence Regime in a Single-Electron Transistor
- Real-time dynamics in Quantum Impurity Systems: A Time-dependent Numerical Renormalization Group Approach
- Spin Precession and Real Time Dynamics in the Kondo Model: A Time-Dependent Numerical Renormalization-Group Study
- Tuning the Kondo effect with a mechanically controllable break junction
- How long does it take for the Kondo effect to develop?
- Suppression of Kondo effect in a quantum dot by external irradiation
- The Anderson Model out of equilibrium: Time dependent perturbations
- Nonlinear Response of a Kondo system: Direct and Alternating Tunneling Currents
- Kondo time scales for quantum dots - response to pulsed bias potentials
- Out-of-Equilibrium Kondo Effect: Response to Pulsed Fields
- Periodic Field Emission from an Isolated Nano-Scale Electron Island
- Transient currents and universal timescales for a fully time-dependent quantum dot in the Kondo regime
- Transient current in a quantum dot asymmetrically coupled to metallic leads
- Electron Transport through a Molecular Conductor with Center-of-Mass Motion
- Kondo Shuttling in Nanoelectromechanical Single-Electron Transistor
- Dynamical 1/N approach to time-dependent currents through quantum dots