Surface sensitivity effects with local probe scanning Auger–scanning electron microscopy

D.T.L. van Agterveld, G. Palasantzas, J.Th.M. De Hosson

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Abstract

This letter concentrates on a quantitative description of surface roughness effects on Auger peak-line profiles for pure and alloyed specimens. The nanometer lateral electron probe size of the order of 10 nm yielded peak-line profiles that capture surface topology variations down to nanometer-length scales. Surface roughness leads to peak-intensity fluctuations, which are described within the weak roughness limit by a simple form, I(r)≈Iav[1+βh(r)]. Iav is the average peak intensity, h(r) represents the roughness fluctuation along a lateral in-planar distance r, and β is a constant (1/2 showed a power-law behavior Iz(r)∝r^α with α ranging between 0.7 and 1 at small-length scales, i.e., for r«ξ, with ξ a peak correlation length that was comparable to average specimen cluster sizes.
Original languageEnglish
Pages (from-to)1080-1082
Number of pages3
JournalApplied Physics Letters
Volume75
Issue number8
DOIs
Publication statusPublished - 1999

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