[ASAP] Making a Hedgehog Spin-Vortex State Possible: Geometric Frustration on a Square Lattice Posted on 9 April 2024 by Stefanie Siebeneichler, Alexander Ovchinnikov, Denis Sheptyakov, and Anja-Verena Mudring Chemistry of MaterialsDOI: 10.1021/acs.chemmater.3c02170