Orbital-selective correlations are crucial in understanding Fe-based superconductors, yet their origins remain debated. Here, the authors propose a band-theory-based mechanism for orbital-selective physics in monolayer FeSe, revealing that antiferromagnetic fluctuations selectively couple to x2 − y2 orbitals, offering broader insights for orbital-selective systems with four-fold and six-fold symmetry axes.
- Mercè Roig
- Qiang Zou
- Michael Weinert
