Signatures of bandlike tunneling in granular nanowires

J. Fransson, J. F. Lin, L. Rotkina, J. P. Bird, Peter Bennett

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3 Scopus citations

Abstract

We explore the problem of tunneling through disorderd nanowires, comprised of a random distribution of metallic grains, by means of a many-body model that captures the essential physics of the system. The random configuration of grains gives rise to a smooth bandlike set of states that mediates current flow through the nanowires. Analytical and numerical calculations show the characteristic signature of this unusual bandlike transport to be a quadratic variation of the current as a function of the applied voltage (i.e., I∼V2), a variation that is clearly observed in experimental studies of Pt/C composite nanowires.

Original languageEnglish (US)
Article number113411
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume72
Issue number11
DOIs
StatePublished - Sep 15 2005

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ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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