Speaker
Description
Many complex oxides undergo a temperature-driven insulator-to-metal transition (IMT), usually around room temperature. In some materials, an IMT can also be induced by applying a current, opening the possibility to use these materials as controllable switches in electronic devices. $\textrm{Ca}_2\textrm{RuO}_4$ is such a case: The resistivity can be changed by orders of magnitude when a current is applied, but the underlying physics is poorly understood. In this study, angle-resolved photoemission spectroscopy (ARPES) measurements of the current-induced IMT in $\textrm{Ca}_2\textrm{RuO}_4$ are clustered with $k$-means. The qualitative signs of the IMT are correctly identified by the clustering algorithm, both when clustering the full angle and energy-resolved spectra and when clustering the angle-integrated energy distributions. In addition, more detailed information on the changes in the electronic band structure under the IMT is revealed.
| Broad physics domain | Surface Physics, Solid-state Physics, Computational Physics |
|---|---|
| AI/ML technique(s) to be presented | $k$-means |
