Lachman Ella, Murphy Ryan A, Maksimovic Nikola, Kealhofer Robert, Haley Shannon, McDonald Ross D, Long Jeffrey R, Analytis James G
Department of Physics, University of California, Berkeley, CA, 94720, USA.
Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA.
Nat Commun. 2020 Jan 28;11(1):560. doi: 10.1038/s41467-020-14326-9.
Co[Formula: see text]Sn[Formula: see text]S[Formula: see text] is a ferromagnetic Weyl semimetal that has been the subject of intense scientific interest due to its large anomalous Hall effect. We show that the coupling of this material's topological properties to its magnetic texture leads to a strongly exchange biased anomalous Hall effect. We argue that this is likely caused by the coexistence of ferromagnetism and geometric frustration intrinsic to the kagome network of magnetic ions, giving rise to spin-glass behavior and an exchange bias.
Co[公式：见原文]Sn[公式：见原文]S[公式：见原文]是一种铁磁外尔半金属，因其巨大的反常霍尔效应而成为科学界密切关注的对象。我们表明，这种材料的拓扑性质与其磁织构的耦合导致了强烈的交换偏置反常霍尔效应。我们认为，这可能是由磁性离子的 Kagome 网络固有的铁磁性和几何失配共存引起的，从而产生了自旋玻璃行为和交换偏置。
