Image deformation in field ion microscopy of faceted crystals.
We perform detailed numerical simulations of field ion microscopy images of faceted crystals and compare them with experimental observations. In contrast to the case of crystals with a smooth surface, for a faceted topography we find extreme deformations of the ion image. Local magnification is highly inhomogeneous and may vary by an order of magnitude: from 0.64 to 6.7. Moreover, the anisotropy of the magnification at a point located on the facet edge may reach a factor of 10.
Niewieczerzał
Daniel
D
Institute of Theoretical Physics, University of WrocŁaw, Plac Maksa Borna 9, 50-204 WrocŁaw, Poland.
Oleksy
Czesław
C
Szczepkowicz
Andrzej
A