拓扑交替磁绝缘体
Topological Altermagnetic Insulators
AI总结：
研究在关联交替磁体的Lieb晶格模型中，利用伊辛自旋轨道耦合及哈特利-福克、精确对角化技术，发现平均电子密度为2和4时量子自旋霍尔效应与交替磁自旋序共存，且拓扑边缘模对反演对称性破缺项具有鲁棒性。
AI中文摘要：
我们在关联交替磁体的典型Lieb晶格模型中，研究由伊辛自旋轨道耦合稳定的交替磁拓扑相的出现。通过哈特利-福克方法和精确对角化技术处理电子相互作用，我们在每个晶胞平均电子密度为2和4的宽参数空间区域内，确立了量子自旋霍尔效应与交替磁自旋序的共存。我们探究了沿边缘的磁结构如何影响相关拓扑边缘模的电子行为，证明其对反演对称性破缺项具有鲁棒性。
英文摘要：
We study the emergence of altermagnetic topological phases stabilized by Ising spin-orbit coupling in a prototypical Lieb lattice model of a correlated altermagnet. Treating the electron interactions within the Hartree-Fock and the exact diagonalization techniques, we establish the co-existence of a quantum spin Hall effect with altermagnetic spin order over a wide region of the parameter space for average electron densities of 2 and 4 per unit cell. We explore how the magnetic structure along edges influences the electronic behavior of the associated topological edge modes, demonstrating their robustness against inversion-symmetry breaking terms.
