Convergent-Beam EMCD: Benefits, Pitfalls, and Applications

Stefan Löffler; Walid Hetaba

doi:10.1093/jmicro/dfx129

Convergent-Beam EMCD: Benefits, Pitfalls, and Applications

Instrumentation and Detectors 2019-03-12 v1 Materials Science

Authors: Stefan Löffler , Walid Hetaba

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Abstract

Energy-loss magnetic chiral dichroism (EMCD) is a versatile method for studying magnetic properties on the nanoscale. However, the classical EMCD technique is notorious for its low signal to noise ratio (SNR). Here, we study the theoretical possibilities of using a convergent beam for EMCD. In particular, we study the influence of detector positioning as well as convergence and collection angles on the detectable EMCD signal. In addition, we analyze the expected SNR and give guidelines for achieving optimal EMCD results.

Cite

@article{arxiv.1707.01579,
  title  = {Convergent-Beam EMCD: Benefits, Pitfalls, and Applications},
  author = {Stefan Löffler and Walid Hetaba},
  journal= {arXiv preprint arXiv:1707.01579},
  year   = {2019}
}

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