发表机构
Beijing Institute of Technology; Northwest University; Johannes Gutenberg University Mainz; Czech Academy of Sciences（北京理工大学; 西北大学; 美因茨约翰内斯古腾堡大学; 捷克科学院）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
本文通过自旋群对称性分析，建立了奇宇称磁体中时间反演奇输运的通用框架，并识别出可实现显著反常霍尔效应的现实材料平台。
AI 中文摘要
兼具消失净磁化强度、自旋劈裂电子结构与反常输运的非常规磁体已引起广泛关注。利用自旋群对称性分析，我们推导了二维和三维共面非共线反铁磁体中奇宇称自旋劈裂的一般条件。我们识别出一个关键的自旋群对称性，其相对论对应物禁止时间反演奇输运，并表明在自旋-轨道耦合存在下打破该对称性可实现此类输运。紧束缚计算验证了这些对称性论证，并展示了在无外场条件下完全补偿的奇宇称磁态中的反常霍尔效应。通过筛选三维磁性材料数据库并构建二维异质结构，我们进一步识别出展现出显著自旋取向依赖反常霍尔和磁光效应的现实平台。我们的结果建立了奇宇称磁体中时间反演奇响应的通用对称性框架，并强调完全补偿的奇宇称磁体作为控制反常输运的有前景平台。
英文摘要
Unconventional magnets combining vanishing net magnetization with spin-split electronic structures and anomalous transport have attracted considerable attention. Using spin-group symmetry analysis, we derive general conditions for odd-parity spin splitting in two- and three-dimensional coplanar noncollinear antiferromagnets. We identify a key spin-group symmetry whose relativistic counterpart forbids time-reversal-odd transport and show that breaking it allows such transport in the presence of spin-orbit coupling. Tight-binding calculations validate these symmetry arguments and demonstrate an anomalous Hall effect in a fully compensated odd-parity magnetic state without an external field. By screening a three-dimensional magnetic materials database and constructing two-dimensional heterostructures, we further identify realistic platforms exhibiting pronounced spin-orientation-dependent anomalous Hall and magneto-optical effects. Our results establish a general symmetry framework for time-reversal-odd responses in odd-parity magnets and highlight fully compensated odd-parity magnets as a promising platform for controlling anomalous transport.
Commentsmain text: 7 pages, 3 figures
