Proposal for a three-dimensional magnetic measurement method with nanometer-scale depth resolution

Abstract

We propose a magnetic measurement method based on combining depth sectioning and electron magnetic circular dichroism in scanning transmission electron microscopy. Electron vortex beams with large convergence angles, as those achievable in current state-of-the-art aberration correctors, could produce atomic lateral resolution and depth resolution below 2~nm.

arXiv comment5 pages, 3 figures

References in corpus (7)

• First principles theory of chiral dichroism in electron microscopy applied to 3d ferromagnets
• Sum-rules for electron energy-loss near-edge spectra
• Experimental application of sum rules for electron energy loss magnetic chiral dichroism
• Is magnetic chiral dichroism feasible with electron vortices?
• Boundaries for efficient use of electron vortex beams to measure magnetic properties
• Electron vortices in crystals
• On-column 2p bound state with topological charge \pm1 excited by an atomic-size vortex beam in an aberration-corrected scanning transmission electron microscope