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Published Online September 4, 2003
Science DOI: 10.1126/science.1088971

Research Articles

Submitted on July 9, 2003
Accepted on August 26, 2003

Visualization and Spectroscopy of a Metal-Molecule-Metal Bridge

G. V. Nazin 1, X. H. Qiu 1, W. Ho 1*

1 Department of Physics and Astronomy and Department of Chemistry, University of California, Irvine, CA 92697-4575, USA.

* To whom correspondence should be addressed. E-mail: wilsonho{at}uci.edu.

Artificial nanostructures, each composed of a copper phthalocyanine (CuPc) molecule bonded to two Au atomic chains with a controlled gap, were assembled on a NiAl(110) surface by manipulation of individual Au atoms and CuPc molecules with a scanning tunneling microscope (STM). The electronic densities of states (DOS) of these hybrid structures were measured by spatially resolved electronic spectroscopy and systematically tuned by varying the number of Au atoms in the chains one by one. The present approach provides structural images and electronic characterization of the metal-molecule-metal junction, thereby elucidating the nature of the contacts between the molecule and metal in this junction.


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Inaugural Article: Optical forces between metallic particles.
A. J. Hallock, P. L. Redmond, and L. E. Brus (2005)
PNAS 102, 1280-1284
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Science. ISSN 0036-8075 (print), 1095-9203 (online)