An open-source, end-to-end workflow for multidimensional photoemission spectroscopy

Abstract

Characterization of the electronic band structure of solid state materials is routinely performed using photoemission spectroscopy. Recent advancements in short-wavelength light sources and electron detectors give rise to multidimensional photoemission spectroscopy, allowing parallel measurements of the electron spectral function simultaneously in energy, two momentum components and additional physical parameters with single-event detection capability. Efficient processing of the photoelectron event streams at a rate of up to tens of megabytes per second will enable rapid band mapping for materials characterization. We describe an open-source workflow that allows user interaction with billion-count single-electron events in photoemission band mapping experiments, compatible with beamlines at $3^{\text{rd}}$ and $4^{\text{th}}$ generation light sources and table-top laser-based setups. The workflow offers an end-to-end recipe from distributed operations on single-event data to structured formats for downstream scientific tasks and storage to materials science database integration. Both the workflow and processed data can be archived for reuse, providing the infrastructure for documenting the provenance and lineage of photoemission data for future high-throughput experiments.

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Cited by in corpus (8)

• Time- and Angle-Resolved Photoemission Studies of Quantum Materials
• Angle-resolved photoemission spectroscopy
• Time- and momentum-resolved photoemission studies using time-of-flight momentum microscopy at a free-electron laser
• Time-Resolved Momentum Microscopy with a 1 MHz High-Harmonic Extreme Ultraviolet Beamline
• A quantitative comparison of time-of-flight momentum microscopes and hemispherical analyzers for time- and angle-resolved photoemission spectroscopy experiments
• A machine learning route between band mapping and band structure
• Ultrafast electronic line width broadening in the C 1s core level of graphene
• Multispectral time-resolved energy-momentum microscopy using high-harmonic extreme ultraviolet radiation