Parameter-free extraction of EMCD

TL;DR

This paper introduces a parameter-free multivariate curve resolution method for extracting electron magnetic circular dichroism spectra from diffraction patterns, effectively handling complex dynamical diffraction effects without requiring prior symmetry or orientation information.

Contribution

The novel method enables magnetic signal extraction from energy-filtered diffraction data without relying on parameters or crystal symmetry assumptions.

Findings

Successfully extracts magnetic signals regardless of crystal symmetry.

Overcomes challenges posed by complex dynamical diffraction effects.

Applicable to various crystalline specimens without prior parameter tuning.

Abstract

We present a parameter-free method of extraction of the electron magnetic circular dichroism spectra from energy-filtered diffraction patterns measured on crystalline specimen. The method is based on multivariate curve resolution technique. The main advantage of the proposed method is that it allows extraction of the magnetic signal regardless of the symmetry and orientation of the crystal. In other words, our new method overcomes difficulties caused by complexity of dynamical diffraction effects.