Superlattice formation dictates the physical properties of many materials, including the nature of the ground state in magnetic materials. Chemical composition is commonly considered to be the primary determinant of superlattice identity, especially in intercalation compounds. Here, we find that, contrary to this conventional wisdom, kinetic control of superlattice growth leads to the coexistence of disparate domains within a compositionally "perfect" single crystal. We demonstrate that Cr1/4TaS2 is a bulk noncollinear antiferromagnet in which scattering between bulk and minority superlattice domains engenders complex magnetotransport below the N\'{e}el temperature, including an anomalous Hall effect. We characterize the magnetic phases in different domains, image their nanoscale morphology, and propose a mechanism for nucleation and growth. These results provide a blueprint for the deliberate engineering of macroscopic transport responses via microscopic patterning of magnetic exchange interactions in superlattice domains.
@article{arxiv.2411.08381,
title = {Anomalous Hall effect from inter-superlattice scattering in a noncollinear antiferromagnet},
author = {Lilia S. Xie and Shannon S. Fender and Cameron Mollazadeh and Wuzhang Fang and Matthias D. Frontzek and Samra Husremović and Kejun Li and Isaac M. Craig and Berit H. Goodge and Matthew P. Erodici and Oscar Gonzalez and Jonathan P. Denlinger and Yuan Ping and D. Kwabena Bediako},
journal= {arXiv preprint arXiv:2411.08381},
year = {2024}
}