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      Coulomb drag effect in parallel quantum dots

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      Author
      Tanatar, Bilal
      Moldoveanu, V.
      Date
      2009
      Source Title
      AIP Conference Proceedings
      Print ISSN
      0094-243X
      Publisher
      American Institute of Physics
      Volume
      1147
      Pages
      87 - 93
      Language
      English
      Type
      Conference Paper
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      Abstract
      We study theoretically the electronic transport in parallel few-level quantum dots in the presence of both intradot and interdot long-range Coulomb interaction. Each dot is connected to two leads and the steady-state currents are calculated within the Keldysh formalism using the random-phase approximation for the interacting Green functions. Due to the momentum transfer mechanism between the two systems it is possible to get a nonvanishing current through an unbiased Coulomb-blockaded dot if the other dot is set in the nonlinear transport regime. The transitions between the levels of the passive dot reduce the drag current and lead to negative differential conductance.
      Keywords
      Coulomb drag effect
      Nanoelectronic devices
      Quantum dots
      Permalink
      http://hdl.handle.net/11693/28677
      Published Version (Please cite this version)
      http://dx.doi.org/10.1063/1.3183491
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      • Department of Physics 2299
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