Angle-resolved X-ray photoemission electron microscopy

Abstract

Synchrotron based photoemission electron microscopy with energy filter combines real space imaging with microprobe diffraction ($\mu$-ARPES), giving access to the local electronic structure of laterally inhomogeneous materials. We present here an overview of the capabilities of this technique, illustrating selected applications of angle resolved photoemission electron microscopy and related microprobe methods. In addition, we report the demonstration of a darkfield XPEEM (df-XPEEM) imaging method for real space mapping of the electronic structure away from $\Gamma$ at a lateral resolution of few tens of nm. The application of df-XPEEM to the (1$\times$12)-O/W(110) model oxide structure shows the high sensitivity of this technique to the local electronic structure, allowing to image domains with inequivalent adsorption site symmetry. Perspectives of angle resolved PEEM are discussed.

10 pages, 6 figures, the article belongs to a special issue "Photoelectron microscopy, Time resolved pump-probe PES" (Edited By Maya Kiskinova and Andreas Scholl)

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• Quantitative analysis of shadow X-ray Magnetic Circular Dichroism Photo-Emission Electron Microscopy
• High-temperature oxygen monolayer structures on W(110) revisited
• Evidence of directional structural superlubricity and Lévy flights in a van der Waals heterostructure