Polar-Orientated Mg-O Layers on Ag(111): a STM Study

M. Mantilla; N. Jedrecy; R. Lazzari; J. Jupille

doi:10.1380/ejssnt.2009.476

Conference -ICSFS-14-

Polar-Orientated Mg-O Layers on Ag(111): a STM Study

M. Mantilla, N. Jedrecy, R. Lazzari, J. Jupille

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Keywords: Scanning tunneling microscopy, MgO, Ag(111), Surface structure, morphology, roughness, and topography, Nanostructures, Magnesium oxides

JOURNAL FREE ACCESS

2009 Volume 7 Pages 476-479

DOI https://doi.org/10.1380/ejssnt.2009.476

Erratum : e-JSSNT Vol. 7, p. 529 (2009)

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Abstract

We report on a scanning tunneling microscopy (STM) study of Mg-O surfaces obtained from ultra-thin Mg/Ag(111) layers exposed to different doses of oxygen at room temperature. Large scale images of any of the Mg-O surfaces show faintly corrugated alignments of 2-2.5 nm wide elementary dots. For adequate O₂ pressure with respect to the nominal Mg coverage, the dots are aligned along the < 112 > directions of silver. A hexagonal array of dots with a 4.5 nm periodicity may even be obtained, which we attribute to an epitaxial Mg-O (111) layer with in-plane spacing equal to 3.0 or 3.2 nm. [DOI: 10.1380/ejssnt.2009.476]

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