Step interactions on Pt(111) vicinal surfaces determined by grazing incidence X-ray diffraction: Influence of the step orientation

SURFACE SCIENCE

卷:604

Article

Prevot, G.¹  Barbier, L.²  Steadman, P.³ 

[1] Univ Paris 06, Inst NanoSci Paris, CNRS, UMR 7588, F-75015 Paris, France

[2] CEA, IRAMIS, SPCSI, F-91191 Gif Sur Yvette, France

[3] Diamond Light Source Ltd, Didcot OX11 0DE, Oxon, England

关键词: X-ray scattering, diffraction, and reflection;    Surface energy;    Surface relaxation and reconstruction;    Surface stress;    Platinum;   

DOI  :  10.1016/j.susc.2010.04.012

来源: Elsevier

【 摘 要 】

We have studied the step step interactions on the Pt(997) vicinal surface. Grazing incidence X-ray diffraction (GIXD) allowed us to measure the elastic atomic relaxations near the surface due to the steps. By means of the model of buried elastic dipoles, within the framework of anisotropic linear elasticity (ALE) calculations, the surface stress of Pt(111), and the elastic interaction between steps are deduced. The values so-obtained are compared to the values previously measured on the Pt(779) surface with the same technique. The comparison shows the strong influence of step geometry on step interactions. (C) 2010 Elsevier BM. All rights reserved.

【 授权许可】

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