Electronic correlations and disorder in transport through one-dimensional nanoparticle arrays

Preprint English OPEN
Bascones, E. ; Estevez, V. ; Trinidad, J. A. ; MacDonald, A. H. (2007)
  • Related identifiers: doi: 10.1103/PhysRevB.77.245422
  • Subject: Condensed Matter - Strongly Correlated Electrons | Condensed Matter - Mesoscale and Nanoscale Physics
    arxiv: Condensed Matter::Mesoscopic Systems and Quantum Hall Effect

We analyze and clarify the transport properties of a one-dimensional metallic nanoparticle array with interaction between charges restricted to charges placed in the same conductor. We study the threshold voltage, the I-V curves and the potential drop through the array and their dependence on the array parameters including the effect of charge and resistance disorder. We show that very close to threshold the current depends linearly on voltage with a slope independent on the array size. At intermediate bias voltages, for which a Coulomb staircase is observed we find that the average potential drop through the array oscillates with position. At higher voltages I-V curves are linear but have a finite offset voltage. We show that the slope is given by the inverse of the resistances added in series and estimate the voltage at which this linear regime is reached. We also calculate the offset voltage and relate it to the potential drop through the array.
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