Journal
PHYSICAL REVIEW LETTERS
Volume 86, Issue 11, Pages 2337-2340Publisher
AMERICAN PHYSICAL SOC
DOI: 10.1103/PhysRevLett.86.2337
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Szoke's concept for electron holography is hampered by forward scattering that dominates electron diffraction from electron point sources below the surface top layer. Forward scattering was proposed to be suppressed if the anisotropic nature of the electron source wave is exploited [T. Greber and J. Osterwalder, Chem. Phys. Lett. 256, 653 (1996)]. Experiments show a strong suppression of forward scattering in Al(111) if Al 2s photoelectrons (E-kin = 952 eV) are measured near the nodal plane of the outgoing p wave. The holographic reconstruction from such diffraction data provides three dimensional images of atomic sites in unit cells with a size of more than 10 Angstrom.
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