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Zeitschriftenartikel:

M. Stöger-Pollach:
"Comment on: "Optical properties of metallic nanowires by valence electron energy loss spectroscopy"";
Materials Letters, 72 (2012), S. 168 - 169.



Kurzfassung englisch:
Recently Laffont et al. have published a paper [Laffont, L., Lonjon, A., Dantras, E., Demont, P., and Lacabanne, C., Materials Letters (2011), doi:10.1016/j.matlet.2011.07.082] in which the determination of the dielectric function of gold and nickel nanowires is determined by employing valence electron energy loss spectrometry and subsequent Kramers-Kronig Analysis (KKA). For gold their result shows a real part of the dielectric function with a value of three at zero eV energy loss which corresponds to a refractive index n = 1.7, because the imaginary part of their resulting dielectric function has a value of zero at the respective energy loss. In the same manuscript they write that they have used a refractive index of n → ∞ for the normalization during the KKA routine. This discrepancy therefore requires a more detailed discussion. Finally we will find out that data treatment can lead to extremely huge errors if it is not done accurately enough


"Offizielle" elektronische Version der Publikation (entsprechend ihrem Digital Object Identifier - DOI)
http://dx.doi.org/10.1016/j.matlet.2011.10.055


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