Negative Differential Resistance at Atomic Contacts

        Negative differential resistance is found for a pair of electrodes each consisting of a single Al atom coupled to a flat metal surface, where the Al atom is separated from the surface by a spacer atom (Br). This behavior is seen when the Al atoms are at a short distance from one another, and disappears when the distance is decreased to the point at which the Al atoms are in contact.

By: N. D. Lang

Published in: RC20535 in 1996

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