engleski

Surface Microscopy and Spectroscopy

One of the most remarkable aspects in the study of surfaces is that their properties can be extremely different from those of the corresponding bulk material. The broken symmetry at the surfaces is reflected on electronic properties. For example, electron can be trapped between two barriers: image potential barrier introduced by surface, and a gap in the projection of bulk electronic on the particular surface, resulting in 2D surface states. Also on some surfaces surface reconstruction may take a place. In addition to this, the relative importance of the surfaces increases for smaller structures. This is particularly relevant for nano-technology where surfaces are often used as templates for assembling nano objects. There is a great variety of surface experimental techniques giving information about: atomic structure, electronic structure, thermal excitations, chemical composition, adsorption and desorption phenomena.

Surface; Experimental methods; Microscopy; Spectroscopy

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