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Is there Ballistic Conductance Quantization in Real Life Metals Nanocontacts?

N. Garcia·Ming Bai·Yonghua Lu·M. Munoz·A. P. Levanyuk
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Abstract

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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N. Garcia, Ming Bai, Yonghua Lu, M. Munoz, A. P. Levanyuk. 2006-03-16. Is there Ballistic Conductance Quantization in Real Life Metals Nanocontacts?. https://arxiv.org/abs/cond-mat/0603441

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