Abstract: In recent years, bilayers and moire superlattices of van der Waals materials have surfaced as new tunable quantum platforms for the realization of emergent phases. While moire-induced electronic phases have been extensively explored over the past few years, moire engineering of magnetic phases is a newer emerging topic. In the first part of my talk, I will discuss how stacking dependent interlayer exchange can be used to create novel spin textures such as skyrmions. I will illustrate this mechanism by applying it to twisted bilayers of Cr-based trihalides and α-RuCl3. In addition, I will discuss competition of magnetic order and heavy fermion formation in artificial Kondo superlattices. In the second part, I will focus on quantum spin liquid bilayers and discuss how twist angle and interlayer exchange can be utilized to create new topological phases with emergent quasiparticles such as ‘fractionalized Goldstone modes’ in these systems.

Short bio: Onur Erten received his Ph.D. from The Ohio State University. He held postdoctoral positions at Rutgers University and the Max Planck Institute for the Physics of Complex Systems before joining Arizona State University, where he is currently an associate professor. His research focuses on theoreti[1]cal condensed matter physics, with interests spanning strongly correlated elec[1]tron systems, quantum magnetism, superconductivity, and topological phases in quantum materials.