| Probing the electronic structure at semiconductor surfaces using charge transport in nanomembranes. | |
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MedLine Citation:
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PMID: 23299889 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
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The electrical properties of nanostructures are extremely sensitive to their surface condition. In very thin two-dimensional crystalline-semiconductor sheets, termed nanomembranes, the influence of the bulk is diminished, and the electrical conductance becomes exquisitely responsive to the structure of the surface and the type and density of defects there. Its understanding therefore requires a precise knowledge of the surface condition. Here we report measurements, using nanomembranes, that demonstrate direct charge transport through the π* band of the clean reconstructed Si(001) surface. We determine the charge carrier mobility in this band. These measurements, performed in ultra-high vacuum to create a truly clean surface, lay the foundation for a quantitative understanding of the role of extended or localized surface states, created by surface structure, defects or adsorbed atoms/molecules, in modifying charge transport through semiconductor nanostructures. |
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Authors:
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Weina Peng; Zlatan Aksamija; Shelley A Scott; James J Endres; Donald E Savage; Irena Knezevic; Mark A Eriksson; Max G Lagally |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Nature communications Volume: 4 ISSN: 2041-1723 ISO Abbreviation: Nat Commun Publication Date: 2013 Jan |
Date Detail:
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Created Date: 2013-01-09 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 101528555 Medline TA: Nat Commun Country: England |
Other Details:
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Languages: eng Pagination: 1339 Citation Subset: IM |
Affiliation:
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Department of Physics, University of Wisconsin-Madison, 1150 University Avenue, Madison, Wisconsin 53706, USA. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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