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Competition between surface reaction and diffusion of gold deposited onto ZrTe3 |
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| Authors: | N. JugA. Prodan,H.J.P. van MiddenP. Starowicz,H. Bö hmF.W. Boswell,J.C. Bennett |
| Affiliation: | a Institute Jo?ef Stefan, Jamova 39, SI-1000 Ljubljana, Slovenia b Department of Physics, University of Neuchâtel, CH-2000 Neuchâtel, Switzerland c Institut für Geowissenschaften, Johannes Gutenberg Universität, D-55099 Mainz, Germany d Department of Physics, University of Waterloo, Waterloo, Ont., Canada N2L 3G1 e Department of Physics, Acadia University, Wolfville, NS, Canada B0P 1X0 |
| Abstract: | Surface reaction and diffusion of gold, deposited onto the (0 0 1) ZrTe3 van der Waals (vdW) surface, is studied by transmission electron and scanning tunneling microscopy. It is shown that both processes compete at temperatures as low as room temperature. In case of diffusion the deposited gold mostly disappears from the surface and intercalates into the vdW gaps of the substrate. Residual unreacted gold agglomerates are rather mobile and are often displaced by the scanning tip along the [1 0 0] direction of the substrate. In case of reaction, which usually takes place at somewhat higher substrate temperatures, grains of Zr3Te2, AuTe2 and/or Au2Te3 are formed. Contrary to unreacted gold, the reaction products are not mobile. |
| Keywords: | Zirconium Gold Surface diffusion Surface chemical reaction Scanning tunneling microscopy |
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