Fast atom interaction with surfaces at grazing incidence: classical and quantum scattering applied to thin film growth

E M Staicu Casagrande,H Khemliche,A Momeni

doi:10.1088/1742-6596/1412/20/202010

Abstract

SynopsisCharacterization of solid surfaces with heavy particles has mainly relied on the use of ions at energies from keV to MeV. Although atomic diffraction at thermal energies has been known since 1930 and became popular in the 1970’s as a powerful surface characterization technique, it is nowadays rather confidential. Unexpectedly, diffraction with atoms in the keV range has also been observed despite the tininess of the de Broglie wavelength. Grazing Incidence Fast Atom Diffraction (GIF AD) has now become mature and allows the real-time analysis, during the growth, of the most fragile layers.

Highlights

E Staicu Casagrande, A Momeni, H Khemliche
Synopsis Characterization of solid surfaces with heavy particles has mainly relied on the use of ions at energies from keV to MeV
One alternative solution for probing the outermost surface layer of these materials, is to use atoms instead of ions. When He atoms in the energy range 0.2-1 keV are scattered at grazing incidence, they provide a wealth of information on both structural and electronic properties without any damage

Summary

Introduction

E Staicu Casagrande, A Momeni, H Khemliche. Fast atom interaction with surfaces at grazing incidence: classical and quantum scattering applied to thin film growth. 31st International Conference on Photonic, Electronic and Atomic Collisions (ICPEAC XXXI), Jul 2019, Deauville, France. pp.202010, 10.1088/1742-6596/1412/20/202010. hal-03093806. HAL is a multi-disciplinary open access archive for the deposit and dissemination of scientific research documents, whether they are published or not. The documents may come from teaching and research institutions in France or abroad, or from public or private research centers. L’archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des établissements d’enseignement et de recherche français ou étrangers, des laboratoires publics ou privés.

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Conclusion