Origin of anomalously long interatomic distances in suspended gold chains

Details Origin of anomalously long interatomic distances in suspended gold chains Origin of anomalously long interatomic distances in suspended gold chains

2002-01-07

arxiv.org/abs/physics/0201008v1

Physics

Atomic and Molecular Clusters

4 pages, 4 Postscript figures, to be published in Physical Review Letters

Scientific paper

10.1103/PhysRevLett.88.076105

The discovery of long bonds in gold atom chains has represented a challenge for physical interpretation. In fact, interatomic distances frequently attain 3.0-3.6 A values and, distances as large as 5.0 A may be seldom observed. Here, we studied gold chains by transmission electron microscopy and performed theoretical calculations using cluster ab initio density functional formalism. We show that the insertion of two carbon atoms is required to account for the longest bonds, while distances above 3 A may be due to a mixture of clean and one C atom contaminated bonds.

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