Electron transport through the triple quantum dot

We study the electron transport through the three quantum dots in a triangular configuration coupled with three electron reservoirs out of the Kondo regime. Using the equation of motion method for appropriate correlation functions the quantum dots occupancies, the nonstationary (transient) and steady-state currents are investigated for different values of the Coulomb interaction, bias voltages and inter-dot tunneling coupling. The appearance of the dark state blocking the current flow is discussed. Studying the transient properties of the system we find that the delay in the appearance of a dark state is much longer in comparison with the time needed to destruct this state. (C) 2010 Elsevier B.V. All rights reserved.