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Signatures of bandlike tunneling in granular nanowires
Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics. Department of Physics and Materials Science, Theoretical Magnetism.
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2005 (Swedish)In: Physical Reivew B: Breif Reports, Vol. 72, no 11, 113411- p.Article in journal (Refereed) Published
Abstract [en]

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~V^2), a variation that is clearly observed in experimental studies of Pt/C composite nanowires.

Place, publisher, year, edition, pages
2005. Vol. 72, no 11, 113411- p.
National Category
Condensed Matter Physics
URN: urn:nbn:se:uu:diva-77154DOI: doi:10.1103/PhysRevB.72.113411OAI: oai:DiVA.org:uu-77154DiVA: diva2:105066
Available from: 2006-03-13 Created: 2006-03-13 Last updated: 2011-01-11

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Fransson, Jonas
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