Nanostructured surfaces

Nanostructures of 3d-metals on single-crystal surfaces Si (111), Si (110) at their thermal deposition
Karbivska L.I., Smolyak S.S., Karbivskyy V.L. 
Department of Nanostructures Physics, G.V. Kurdyumov Institute for Metal Physics, N.A.S. of Ukraine,
36 Academician Vernadsky Boulevard, Kyiv-03142, Ukraine
E-mail: sssmolyak@gmail.com

We have developed a method of vacuum thermal deposition of 3d metals on nanocrystalline semiconductors.
The vacuum thermal deposition of 3d metals on the surface of a single crystal (without cooling the sample and the presence of inert gases) demonstrates various mechanisms of deposition of an atomic metal from the gas phase under the same deposition conditions.
Silver, thermally deposited in a single sputtering cycle in high vacuum and at room temperature, can form atomically flat nanostructures on Si (111).  Nanoformations can look like regular hexagons, which consist of several monolayers. Only a weak interaction of the Ag monolayer with the substrate takes place. Heating to 400 ° C leads to the desorption of silver and the restoration of the reconstructed Si (111) 7×7 surface. This method can be used to protect single-crystal surfaces from destruction.
The morphological features of the indium surface formed during its thermal deposition on the Si (111) and (110) surfaces have been studied. The observed formation of clusters of regular cubic shape indicates the formation of In nanocrystals. The transformation of the density of electronic states of In was established upon the transition from a single cluster (size ~ 10 nm) on the Si (111) surface to a cluster coating of a single crystal surface with a coating thickness up to 30 - 40 nm.

1.	Artemyuk V.A , Karbivska L.I., Kuznetsova O.Ya., Karbivskyy V.L., Klyuyenko L.P., Smolyak S.S. Fabrication and Physical Properties of Mono- and Multilayer Metallic Nanostructures // Progress in Physics of Metals. -2017. – 18, №3. – P.235-263. https://doi.org/10.15407/ufm.18.03.235