2005/04/28 by Juan J. de Vicente Riquelme, J. J. Riquelme, L. de la Vega +7 · 1 citation
Engineering · Materials Science · Physics and Astronomy · #Graphene research and applications #Molecular Junctions and Nanostructures #Semiconductor materials and interfaces #cond-mat.mes-hall
paper · pdf · doi:10.1209/epl/i2005-10028-0
published as Europhys. Lett., 70 (5), pp. 663-669 (2005)
openalex publication_date 2005/04/28 · arxiv created 2005/06/01 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/30
We present an experimental determination of the conduction channel distribution in lead nanoscale contacts with total conductances ranging from 1 to 15 G 0 , where G 0 = 2 e 2 / h . It is found that even for contacts having a cross section much smaller than the mean free path the distribution tends to be remarkably close to the universal diffusive limit. With the help of theoretical calculations we show that this behavior can be associated with the specific band structure of lead which produces a significant contribution of partially open channels even in the absence of atomic disorder.