An extensible metadata scheme for advanced momentum microscopy in the age of big data

Abstract

The electronic structure determines many of the macroscopic physical properties of a material. Photoelectron momentum microscopy (MM) has matured into a powerful tool for the detailed characterization of the exciting electronic properties of novel quantum materials. By applying the principles of high-resolution imaging modern instruments simultaneously capture hundreds of tomographic slices of an electronic structure in a high-dimensional parameter space. Despite the rapid worldwide adoption as a universal tool for material characterization, there is currently no common scheme to describe the highly diverse parameters that define a MM experiment. We aim to establish an extensible and sustainable metadata scheme for momentum microscopy, which will be stored in a structured file together with the measured data voxels. This will be the basis for a standardized work-flow that interprets the stored metadata and to reconstruct views of the multidimensional electronic structure of a material.