Phys. Rev. Lett. 90, 186102 (2003) [4 pages]Localized Molecular Constraint on Electron Delocalization in a Metallic ChainReceived 27 January 2003; published 9 May 2003 An artificial quantum structure consisting of a single CO molecule adsorbed on a Au chain was assembled by manipulating single Au atoms on NiAl(110) at 12 K with a scanning tunneling microscope (STM). The CO disrupts the delocalization of electron density waves in the chain, as it suppresses the coupling between neighboring chain atoms. The possibility to specify the CO position on the chain allows controlled modification of the electronic properties in a quantum system. Inelastic electron tunneling spectroscopy with the STM provides vibrational characterization of the adsorbed CO. © 2003 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.90.186102
DOI:
10.1103/PhysRevLett.90.186102
PACS:
68.37.Ef, 68.43.Fg, 73.21.Fg
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