Magnetic materials with complex spin textures present both fundamental and practical appeal. The complex patterns of magnetic moments emerging on underlying crystal lattices hold potential for robust information storage and processing, including the promise of topological quantum computing. The scope of materials that host such patterns, however, remains rather limited. Herein, we report a discovery of a complex spin texture in a non-centrosymmetric material that emerges from the structural frustration at the boundary between centrosym-metric parent structures. Our findings demonstrate that such structural frustration provides a powerful handle for identifying composition-al spaces where complex magnetic behavior and associated non-trivial magnetic structures are likely to emerge. Thus, the new phase MnCoGe 1/3 As 2/3 exhibits a modulated cycloidal antiferromagnetic arrangement of electron spins on a non-centrosymmetric lattice that materializes in the space between centrosymmetric collinear ferromagnets. This work provides a pathway for discovering novel materials with exotic spin textures for next-generation spintronic and quantum technologies.
Wang et al. (Mon,) studied this question.