【摘 要】
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The time evolution of the current though a quantum dot responding to a stepped bias voltage is studied by a numerical approach in the mixed-valence regime and t
【机 构】
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National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Na
论文部分内容阅读
The time evolution of the current though a quantum dot responding to a stepped bias voltage is studied by a numerical approach in the mixed-valence regime and the Kondo regime. Our numerical results show the quasiperiodic oscillations of the current with a short damping time. When the deviation of the Fermi energy from the resonant dot level is increased by changing the gate voltage, the frequency of the oscillations is increased, but the average current decreases. The results also show a relatively slow oscillation in the Kondo regime.
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