发表机构
National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University; Collaborative Innovation Center of Advanced Microstructures, Nanjing University; Jiangsu Physical Science Research Center, Nanjing University; Hefei National Laboratory, Hefei 230088, People’s Republic of China（南京大学固体微结构物理国家重点实验室和物理系; 南京大学先进微结构协同创新中心; 南京大学江苏省物理科学研究中心; 合肥国家实验室）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
本文提出利用Floquet对称性转换，将面内交流场作用于交错磁体，使隐藏的自旋劈裂转化为可探测的近藤信号，实现场控近藤逻辑门与自旋劈裂层析成像。
AI 中文摘要
近藤物理学中的一个普遍观点是，磁性杂质可以作为其宿主环境关键性质的有效探针。然而，在交错磁体中，这一直觉以对称性强制的方武失效：动量依赖的自旋劈裂在局部杂质谱中相互抵消，使得传统的单杂质近藤共振基本上对交错磁形状因子视而不见。在此，我们通过引入Floquet对称性转换来克服这一限制。我们证明，一个面内的交流场将隐藏的交错磁自旋劈裂转换为局部可探测的自旋依赖杂化通道，该通道进一步被近藤关联放大为一种新型的交错磁近藤效应。值得注意的是，近藤劈裂表现出对场方向的非平凡依赖，并继承了与交错磁宿主相同的晶体形状因子，从而作为交错磁自旋劈裂的近藤层析成像。这种场控响应进一步为对称性控制的近藤逻辑门提供了自然途径。我们的结果确立了一种场可控的交错磁近藤效应，将对称性分辨的杂质光谱学与近藤逻辑功能联系起来。
英文摘要
A common belief in Kondo physics is that a magnetic impurity can act as an efficient probe of key properties of its host bath. In altermagnets, however, this intuition fails in a symmetry-enforced way: the momentum-dependent spin splitting cancels in the local impurity spectrum, making a conventional single-impurity Kondo resonance essentially blind to the altermagnetic form factor. Here, we overcome this constraint by introducing Floquet symmetry conversion. We show that an in-plane AC field converts the hidden altermagnetic spin splitting into a locally detectable spin-dependent hybridization channel, which is further amplified by Kondo correlations into a novel altermagnetic Kondo effect. Remarkably, the Kondo splitting exhibits a nontrivial dependence on the field orientation and inherits the same crystalline form factor as the altermagnetic host, thereby serving as Kondo tomography of altermagnetic spin splitting. This field-controlled response further provides a natural route to symmetry-controlled Kondo logic gates. Our results establish a field-controllable altermagnetic Kondo effect, linking symmetry-resolved impurity spectroscopy to Kondo logic functionality.
