AI 中文总结
研究在修正Kane-Mele-Hubbard模型中，通过载流子掺杂与自旋旋转不变Hubbard相互作用，实现了交替磁反常霍尔效应，为其在关联过渡金属二硫化物单层的应用提供了微观路径。
AI 中文摘要
我们在修正Kane-Mele-Hubbard模型中建立了关联驱动的交替磁反常霍尔效应（AHE）及其相关的“自旋边缘锁定”边缘态的实现路径。利用动力学平均场理论（DMFT），我们发现：在半填充时，增加Hubbard相互作用会使系统从 hosting 反手性边缘态的金属顺磁相，转变为绝缘的面内奈尔型反铁磁相，其中剩余的反幺正对称性会禁止AHE；空穴掺杂会诱导自旋翻转跃迁到面外奈尔型反铁磁相，从而打破该对称性并产生有限的反常霍尔电导率，该电导率可延伸至强关联 regime。与铁磁体中传统的自旋极化霍尔响应不同，交替磁AHE从两个对称性相关的自旋 sector 获得相等且可加的贡献，并伴随自旋边缘锁定手性态。我们的结果表明，载流子掺杂与自旋旋转不变的Hubbard相互作用足以实现交替磁AHE，无需引入明确的伊辛型相互作用，且为其在关联过渡金属二硫化物单层中的实现提供了切实可行的微观路径。
英文摘要
We establish a correlation-driven route to the altermagnetic anomalous Hall effect (AHE) and its associated \emph{spin--edge-locked} edge states in a modified Kane--Mele--Hubbard model. Using dynamical mean-field theory (DMFT), we show that, at half-filling, increasing the Hubbard interaction drives the system from a metallic paramagnetic phase hosting antichiral edge states into an insulating in-plane Néel-type antiferromagnetic phase, in which a residual antiunitary symmetry forbids the AHE. Hole doping induces a spin-flop transition to an out-of-plane Néel-type antiferromagnetic phase, thereby breaking this symmetry and generating a finite anomalous Hall conductivity that persists into the strongly correlated regime. Distinct from a conventional spin-polarized Hall response in ferromagnets, the altermagnetic AHE receives equal and additive contributions from the two symmetry-related spin sectors and is accompanied by spin--edge-locked chiral states. Our results demonstrate that carrier doping and spin-rotationally invariant Hubbard interactions are sufficient to realize the altermagnetic AHE, without invoking an explicitly Ising-like interaction, and provide a realistic microscopic route toward its realization in correlated transition metal dichalcogenides monolayers.
Comments7+3 pages, 7+2 figures
