Speaker
Description
Angle-resolved photoemission spectroscopy (ARPES) is a key experimental technique to determine the electronic structure of quantum materials. Recently, two new variations of ARPES have been introduced. MicroAREPES adds spatial resolution, so that inhomogeneous samples or operating devices can be studied. Time-resolved ARPES adds time resolution, opening a window on dynamic processes, such as coherent phonons or the melting of charge density waves.
Both approaches greatly increase the number of parameters explored and the complexity of the data. In order to discover trends in a multi-dimensional parameter space, we employ clustering techniques such as k-means [1]. Despite the simplicity of the approach, valuable insights are gained on the dynamics of electrons in the three-dimensional Brillouin zone of a Weyl semimetal [2], on the melting of a charge density wave and on the general photoemission line shape in time-resolved ARPES [3].
References
[1] K. O. Mortensen et al., Procs. VLDB Endowment 16, 1740 (2023).
[2] Paulina Majchrzak et al., Physical Review Research 7, 013025 (2025).
[3] T. C. Meyer et al. arxiv2506.02137
| Broad physics domain | experimental condensed matter physics |
|---|---|
| AI/ML technique(s) to be presented | clustering |
