Modelling high-resolution electron microscopy based on core-loss spectroscopy

Leslie Allen, Scott Findlay, M Oxley, Christopher Witte, N Zaluzec

Research output: Contribution to journalArticleResearchpeer-review

27 Citations (Scopus)

Abstract

There are a number of factors affecting the formation of images based on core-loss spectroscopy in high-resolution electron microscopy. We demonstrate unambiguously the need to use a full nonlocal description of the effective core-loss interaction for experimental results obtained from high angular resolution electron channelling electron spectroscopy. The implications of this model are investigated for atomic resolution scanning transmission electron microscopy. Simulations are used to demonstrate that core-loss spectroscopy images formed using fine probes proposed for future microscopes can result in images that do not correspond visually with the structure that has led to their formation. In this context, we also examine the effect of varying detector geometries. The importance of the contribution to core-loss spectroscopy images by dechannelled or diffusely scattered electrons is reiterated here
Original languageEnglish
Pages (from-to)1001 - 1011
Number of pages11
JournalUltramicroscopy
Volume106
Issue number11-12
DOIs
Publication statusPublished - 2006
Externally publishedYes

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