Scientific Achievement
Customized aberrated probes are used to obtain chiral dichroic signals in materials via electron energy-loss spectroscopy (EELS) in STEM with high spatial resolution.
Significance and Impact
A novel approach to measure magnetism in materials has been developed that can be used to detect single atom magnetic moments.
Research Details
–An atomic-size aberrated electron probe was used to detect the antiferromagnetic ordering of Mn moments in LaMnAsO by observing a dichroic signal in the EELS Mn L-edge.
–Density functional theory calculations were performed using an all-electron full-potential linearized augmented plane-waves method implemented in WIEN2k.
J.C. Idrobo, et al., “Detecting magnetic ordering with atomic size electron probes,” Adv. Struct. Chem. Imag. (2016). DOI: 10.1186/s40679-016-0019-9
