AI 中文总结
本研究结合DFT+DMFT与海森堡模型，揭示FeTe中应变驱动的轨道选择电子结构重构及从双共线到条纹反铁磁的演化，为理解其关联电子态提供了关键轨迹。
AI 中文摘要
FeTe作为铁基超导体的代表性母体材料，为探索轨道选择关联、磁性与非常规超导电性之间的相互作用提供了理想平台。然而，应变下FeTe的关联电子结构与磁性的统一图像仍有待完全阐明。本研究结合密度泛函理论加动力学平均场理论与海森堡模型分析，揭示了FeTe中关联电子结构的轨道选择重构，并阐明了应变驱动下FeTe从双共线反铁磁（AFM）经中间竞争型交错n聚体AFM区域到条纹AFM的演化轨迹。适度应变产生了更多相干准粒子与被抑制的局域磁矩共存的区域；进一步应变将FeTe驱动至具有鲁棒局域磁矩、以Fe-3d_z²主导低能态的非相干关联区域。这些结果确立了FeTe中跨不同磁性与关联电子态的应变驱动轨迹。
英文摘要
FeTe, as a representative parent material among iron-based superconductors, provides an ideal platform for exploring the interplay among orbital-selective correlations, magnetism, and unconventional superconductivity. However, a unified picture of the correlated electronic structure and magnetism of FeTe under strain remains to be fully clarified. Here, combining density functional theory plus dynamical mean-field theory and Heisenberg model analysis, we uncover an orbital-selective reconstruction of the correlated electronic structure and reveal a strain-driven trajectory from bicollinear to stripe antiferromagnetism (AFM) via an intermediate competing staggered $n$-mer AFM regime in FeTe. Moderate strain gives rise to a regime where more coherent quasiparticles coexist with suppressed local moments. Further strain drives FeTe into an incoherent correlated regime with robust local moments and Fe-$3d_{z^2}$-dominated low-energy states. These results establish a strain-driven trajectory across distinct magnetic and correlated electronic states in FeTe.
Comments7 pages, 4 figures, 2 tables
