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Reflection electron microscopy and interferometry of atomic steps on gold and platinum single crystal surfaces

โœ Scribed by H. Banzhof; K. H. Herrmann; H. Lichte

Publisher
John Wiley and Sons
Year
1992
Tongue
English
Weight
821 KB
Volume
20
Category
Article
ISSN
1059-910X

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โœฆ Synopsis

Two beam interferences produced using an electrostatic biprism, which is inserted in the position of the selected area diaphragm of a commercial electron microscope, may be used in reflection electron microscopy to determine the phase shifts induced by structures on single crystal surfaces. A description of our interferometrical and holographical experiments on the phase shift at steps on (111)Au and (111)Pt single crystal surfaces is given and a straight forward interpretation of the results in terms of refraction will be discussed. As a particular result phase shifts of IT and 0.91~ were measured for monatomic steps on (1ll)gold and (1 1l)platinum surfaces, respectively.

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Observation of atomic steps on single cr
Observation of atomic steps on single crystal surfaces by a commercial scanning electron microscope
โœ Yuji Uchida; Gisela Weinberg; Gunter Lehmpfuhl ๐Ÿ“‚ Article ๐Ÿ“… 1992 ๐Ÿ› John Wiley and Sons ๐ŸŒ English โš– 621 KB

Atomic steps on ( ) and (100) crystal surfaces of Pt were observed using a commercial scanning electron microscope (SEMI in secondary electron mode. By comparing the SEM images and those by reflection electron microscopy (REM), the observed contrast was confirmed to be that from atomic steps on crys