Coulomb blockade effects in Ag/Si(111): The role of the wetting layer

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Schmeidel, J.; Pfnür, H.; Tegenkamp, C.: Coulomb blockade effects in Ag/Si(111): The role of the wetting layer. In: Physical Review B - Condensed Matter and Materials Physics 80 (2009), Nr. 11, 115304. DOI: https://doi.org/10.1103/PhysRevB.80.115304

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Sum total of downloads: 81




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Abstract: 
Single and double barrier structures have been realized with Ag nanostructures grown on Si(111) in combination with scanning tunneling microscopy. The series connection of a Schottky (SB) and tunneling barrier mimics a double barrier structure showing Coulomb blockade oscillations as revealed by scanning tunneling spectroscopy (STS). Although the SB remains in presence of a Ag√3×√3 reconstruction, the dI/dV characteristic turns into a single barrier structure. The Ag reconstruction provides a sufficiently high electron mobility capturing intrinsic defects which shortens the resistance of the SB. These results show that vertical transport properties, as measured with STS, are not only controlled by the structure and the bonding on the atomic scale, but depend strongly on the lateral properties of the interface as well. © 2009 The American Physical Society.
License of this version: Es gilt deutsches Urheberrecht. Das Dokument darf zum eigenen Gebrauch kostenfrei genutzt, aber nicht im Internet bereitgestellt oder an Außenstehende weitergegeben werden.
Document Type: article
Publishing status: publishedVersion
Issue Date: 2009
Appears in Collections:Fakultät für Mathematik und Physik

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pos. country downloads
total perc.
1 image of flag of Germany Germany 52 64.20%
2 image of flag of United States United States 7 8.64%
3 image of flag of Canada Canada 7 8.64%
4 image of flag of China China 6 7.41%
5 image of flag of Russian Federation Russian Federation 2 2.47%
6 image of flag of Korea, Republic of Korea, Republic of 2 2.47%
7 image of flag of Poland Poland 1 1.23%
8 image of flag of Hungary Hungary 1 1.23%
9 image of flag of Egypt Egypt 1 1.23%
10 image of flag of Czech Republic Czech Republic 1 1.23%
    other countries 1 1.23%

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