Electrical conductivity of reconstructed Si(111) surface with sodium-doped C60 layers

Electrical conductance of sodium-doped C60 ultra-thin layers (1–6 monolayers) grown on the Na-adsorbed Si(111)√3 × √3-Au surface has been studied in situ by four-point probe technique, combined with low-energy electron diffraction observations. Evidence of conductance channel formation through the C...

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Bibliographic Details
Published in:Applied physics letters 2015-01, Vol.106 (1)
Main Authors: Tsukanov, D. A., Ryzhkova, M. V., Borisenko, E. A., Zotov, A. V., Saranin, A. A.
Format: Article
Language:English
Subjects:
Applied physics
Buckminsterfullerene
Electrical resistivity
Fullerenes
Gold
Low energy electron diffraction
Monolayers
Resistance
Sodium
Thin films
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Summary:Electrical conductance of sodium-doped C60 ultra-thin layers (1–6 monolayers) grown on the Na-adsorbed Si(111)√3 × √3-Au surface has been studied in situ by four-point probe technique, combined with low-energy electron diffraction observations. Evidence of conductance channel formation through the C60 ultrathin layer is demonstrated as a result of Na dosing of 3 and 6 monolayers thick C60 layers. The observed changes in surface conductivity can be attributed to the formation of fulleride-like NaC60 and Na2C60 compound layers.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.4905288