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Using a theoretical approach combining the local spin density approximation (LSDA) of density functional theory and the Hubbard U term (LSDA+U), we analyse the connection between the experimentally observed electron energy loss spectra and elevated temperature scanning tunnelling images of surfaces of semiconducting nickel monoxide NiO and uranium dioxide UO 2 . We show that a combination...
It is shown how the two approximate methods of statistical theory of reflection high-energy electron diffraction (the Kirchhoff approximation and the distorted wave Born approximation) can be systematically derived starting from Green's theorem. Conditions of validity of both approximations are discussed together with the possibility of generalizing the second method to the case ofmultiple incoherent...
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