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Conductance calculations for the atomic relay

✍ Scribed by N.D. Lang

Publisher
Elsevier Science
Year
1998
Tongue
English
Weight
119 KB
Volume
23
Category
Article
ISSN
0749-6036

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✦ Synopsis

The resistance of a wire consisting of a line of 3 Mg atoms between two macroscopic metallic electrodes is calculated as a function of the displacement of the center atom laterally out of the line. A displacement of somewhat over 3 Å increases the resistance by a factor of ∼10. This contrasts with the behavior of open-shell atoms: a lateral displacement of the same magnitude of the central atom in a line of Na atoms leads in fact to a small decrease in resistance.

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