Structural and vibrational properties of two-dimensional $\rm Mn_xO_y$ nanolayers on Pd(100)

Details Structural and vibrational properties of two-dimensional $\rm Mn_xO_y$ nanolayers on Pd(100) Structural and vibrational properties of two-dimensional $\rm Mn_xO_y$ nanolayers on Pd(100)

2008-11-14

arxiv.org/abs/0811.2297v1

Phys. Rev. B 79, 035420 (2009)

Physics

Condensed Matter

Materials Science

14 pages, 11 figures

Scientific paper

Using different experimental techniques combined with density functional based theoretical methods we have explored the formation of interface-stabilized manganese oxide structures grown on Pd(100) at (sub)monolayer coverage. Amongst the multitude of phases experimentally observed we focus our attention on four structures which can be classified into two distinct regimes, characterized by different building blocks. Two oxygen-rich phases are described in terms of MnO(111)-like O-Mn-O trilayers, whereas the other two have a lower oxygen content and are based on a MnO(100)-like monolayer structure. The excellent agreement between calculated and experimental scanning tunneling microscopy images and vibrational electron energy loss spectra allows for a detailed atomic description of the explored models.

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