Exploring the Effects of Antiferromagnetic Order on the Electronic Structure of Europium and Gadolinium Telluride across the magnetic transition

Messzeit am Synchrotron SOLARIS, Krakau, Poland

Europium and Gadolinium Telluride (EuTe, GdTe) belong to the rare-earth monochalcogenide family, exhibiting extraordinary changes in their electronic and magnetic properties across the paramagnetic (PM) to antiferromagnetic (AFM) phase transitions, such as giant band gap renormalization in the AFM phase [1]. In this study, we propose to investigate the band structures of these materials across the PM-AFM transition using temperature-dependent ARPES. By measuring the effects of AFM order on the electronic structure and modeling it with disordered local moment (DLM) calculations, we aim to clarify the differing impacts of magnetic order on the electronic structure of EuTe and GdTe. Ultimately, we seek to deepen the understanding of the mechanisms governing their electronic properties and magnetic interactions in both the PM and AFM phases.