Ion scattering from 2D structures: pursuing the monolayer resolution
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Ion scattering from 2D structures: pursuing the monolayer resolution
CIC nanoGUNE Seminars
- Speaker
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Miguel Ángel Muñoz. Instituto de Ciencia de Materiales de Sevilla CSIC, Sevilla, Spain
- When
-
2009/11/09
10:30
- Place
- nanoGUNE seminar room, Tolosa Hiribidea 76, Donostia - San Sebastian
- Add to calendar
-
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ABSTRACT
Medium energy ion scattering (MEIS) is a surface analysis technique with a
huge potential in surface structure determination and high resolution depth
profiling. Along with other analysis techniques, for instance low energy
electron diffraction (LEED), it has provided an answer to open questions in
surface science such as the extent of the adsorbate induced pseudo-(100)
reconstruction of the Cu(111) surface. In our attempt to improve the technique
depth resolution, 2D model systems like Y-Si(111), have been studied in a
combined theoretical and experimental investigation which finally led to a
direct observation of a trajectory dependent electronic energy-loss of the
incident ions and a subsequent reformulation of the energy-loss process along
the short scattering trajectory in the solid.