Multiterminal Nanowire Junctions of Silicon:  A Theoretical Prediction of Atomic Structure and Electronic Properties

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2007-06-01
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Avramov, Pavel
Chernozatonskii, Leonid
Sorokin, Pavel
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Ames National Laboratory

Ames National Laboratory is a government-owned, contractor-operated national laboratory of the U.S. Department of Energy (DOE), operated by and located on the campus of Iowa State University in Ames, Iowa.

For more than 70 years, the Ames National Laboratory has successfully partnered with Iowa State University, and is unique among the 17 DOE laboratories in that it is physically located on the campus of a major research university. Many of the scientists and administrators at the Laboratory also hold faculty positions at the University and the Laboratory has access to both undergraduate and graduate student talent.

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Chemistry

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The Department of Chemistry was founded in 1880.

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Abstract

Using an empirical scheme, the atomic structure of a new exotic class of silicon nanoclusters was elaborated upon the central icosahedral core (Si−IC) and pentagonal petals (Si−PP) growing from Si−IC vertexes. It was shown that Si−IC/Si−PP interface formation is energetically preferable. Some experimental observations of silicon nanostructures can be explained by the presence of the proposed objects. The extended Huckel theory electronic structure calculations demonstrate an ability of the proposed objects to act as nanoscale tunnel junctions.

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Reprinted (adapted) with permission from Nano Letter 7 (2007): 2063, doi:10.1021/nl070973y. Copyright 2007 American Chemical Society.

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Mon Jan 01 00:00:00 UTC 2007
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