Deploying the nanoESCA spectrometer to the novel altermagnet MnTe.

Angular resolved photoemission spectroscopy (ARPES) is a proven tool to study the electronic properties of quantum materials [1]. Recently, ARPES has been deployed to study a new class of materials with potential spintronic applications, the so-called altermagnets, revealing the existence of a giant spin-split band structure [2,3]. The EQUAL lab's very own novel spectrometer, NanoESCA [4], is an energy-filtering photoemission spectrometer with the ability to switch between the imaging of the momentum space and the real space of photoemitted electrons. This system ensures unique measurement of the sample's surface quality and the complete band structure without the need for in-vacuum mechanical sample motion. We deployed this tool to study the electronic properties of MnTe, a known altermagnet compound. I will present new software to analyze NanoESCA data and the corresponding results showing the effects of strain to thin-films of MnTe.