Session 9-3

Abstract

Inspired by the development of various quantum materials, there has been growing interest in deepening our understanding of strongly correlated electrons, Dirac/Weyl electrons, and topologically nontrivial insulators and magnets. These studies have significantly advanced high-quality crystal growth, fabrication, electronic state imaging technologies, and theoretical approaches. As a promising direction for uncovering new and exotic phenomena, focusing on antiferromagnetic low-dimensional metals, semimetals, and narrow-gap semiconductors offers great potential. The rich instabilities of low-dimensional Fermi surfaces, intertwined with various forms of antiferromagnetism in localized magnetic channels, can give rise to exotic emergent phenomena. In my talk, I will present our recent findings on emergent phenomena in antiferromagnetic van der Waals (vdW) metals, semimetals, and semiconductors. Specifically, I will highlight the emergence of exotic phases in RTe_₃ (R: rare earth element) and GdGaI, supported by angle-resolved photoemission spectroscopy (ARPES) and spectroscopic imaging scanning tunneling microscopy (STM) data.