Nonequilibrium Transport Properties through Two Quantum Dot

  • Eto Mikio
    Department of Physics, Faculty of Science and Technology, Keio University, 3–14–1 Hiyoshi, Kohoku–ku, Yokohama 223

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  • Nonequilibrium Transport Properties through Two Quantum Dots.
  • Nonequilibrium Transport Properties thr

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Nonequilibrium transport properties are studied in an array of twoquantum dots connected in series, taking account of the long-range charging effect.The current and its fluctuation are calculated by solving theMaster equation.At low bias voltages, we propose two types of transport; one isa regular motion of charges, one by one, which corresponds to the minimum of the current fluctuation, and the other is an irregular motion, which corresponds to a local maximum. Their interplay results innew rich structures of the Coulomb blockade current oscillation, as a function of the gate voltage.With increasing bias voltage, the current fluctuation goes to aconstant level which is one third of the classical shot noise.

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