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 (1) and α-RuCl3 (2). 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 new emergent quasiparticles such as ‘fractionalized Goldstone bosons’ in these systems (3,4,5).

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