Is there Ballistic Conductance Quantization in Real Life Metals Nanocontacts?

Details Is there Ballistic Conductance Quantization in Real Life Metals Nanocontacts? Is there Ballistic Conductance Quantization in Real Life Metals Nanocontacts?

2006-03-16

arxiv.org/abs/cond-mat/0603441v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Scientific paper

Theory and a vast set of experimental work in metals, since a century, appear to show that the mean free path of conduction electrons in a real metal is about the min (bulk mean free path, smallest transversal size of the metal), a result that was already proposed by J. J. Thomson in 1901. This establishes, as discussed in this work, serious difficulties to justify conductance quantization and ballistic transport in atomic/nanocontacts or nanoconstrictions of real life metals. The ohmic resistance of the leads proves to be as important as the ballistic one of the constriction.

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