Ultra-thin MgO(111)-polar sheets grown onto Ag(111)

Sarpi Brice (1) , Rachid Daineche (1) , Christophe Girardeaux (1) , Anne Hémeryck (2) , Sébastien Vizzini (1)

1 IM2NP - Institut des Matériaux, de Microélectronique et des Nanosciences de Provence
2 LAAS-M3 - Équipe Modélisation Multi-niveaux des Matériaux

An ultra-thin MgO film of two monolayers (ML) was successfully grown onto Ag(111) by repeating twice RT adsorption of Mg atomic monolayer, RT oxidation and 725 K thermal annealing under UHV conditions. Using Auger electron spectroscopy, low electron energy diffraction and scanning tunneling microscopy/spectroscopy, we report here formation of MgO(1x1) and MgO(1x1)-R30 epitaxial layers, consistent with the growth of a MgO(111) polar film onto the silver surface and composed of patches having extended slight corrugation oriented along defined directions with respect to the substrate.

Domaines: Micro et nanotechnologies/Microélectronique; Matériaux; Génie des procédés; Science des matériaux [cond-mat.mtrl-sci]

Sarpi Brice, Rachid Daineche, Christophe Girardeaux, Anne Hémeryck, Sébastien Vizzini. Ultra-thin MgO(111)-polar sheets grown onto Ag(111). Applied Surface Science, 2016, 361, pp.259-264. ⟨10.1016/j.apsusc.2015.11.176⟩. ⟨hal-01407771⟩