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arXiv · 1307.5219

Randomly Fluctuating Potential Controlled Multistable Resonant Tunneling Current through a Quantum Dot

Pei Wang·Gao Xianlong·Shaojun Xu
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Abstract

We study the transport through a quantum dot subject to a randomly fluctuating potential, generated by a sequence of pulses in the gate voltage with the help of the autoregressive model. We find that the tunneling current is multistable when the fluctuating potential with a finite correlation time is applied before the non-equilibrium steady state is built up. The non-equilibrium stationary current is heavily dependent on the history of the fluctuating potential during the transient period if the potential has a finite correlation time. Furthermore, the averaged current over the path of the fluctuating potential is a function of its strength and correlation time. Our work therefore provides a robust theoretical proposal for the controlling of the non-equilibrium stationary current through a quantum dot in a randomly fluctuating potential.

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Pei Wang, Gao Xianlong, Shaojun Xu. 2013-07-19. Randomly Fluctuating Potential Controlled Multistable Resonant Tunneling Current through a Quantum Dot. https://doi.org/10.1209/0295-5075%2F105%2F37004

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