Electronic Transport through a Bending Contact
U. Schröter
FB Physik, AG Scheer, Universität Konstanz, Universitätsstraße 10, 78457 Konstanz, Germany
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Received: 2005 20 05;
The so-called "break-junction technique" allows us to realize contacts only single-atom in diameter at their thinnest point. Electronic transport through such narrow constrictions shows a quantum mechanical signature which is well described in a transport channel picture. Each individual contact is characterized by an ensemble of channel transmission probabilities. Preferred total conductance values as well as the number of channels, however, turn out to be universal for the material investigated, despite the lack of control of the exact contact geometry.
DOI: 10.12693/APhysPolA.109.305
PACS numbers:73.23.-b, 74.50.+r, 74.45.+c