In-Plane Differentiation and Out-of-Plane Coherence in Superconducting K${}_{2-x}$Fe${}_{4+y}$Se${}_5$

Chih-Han Wang, Jie-Yu Yang, Wu Phillip M +3

The structural link between superconductivity and anomalous $d_2$ diffraction signatures in K${}_{2-x}$Fe${}_{4+y}$Se${}_5$ remains unresolved. Their appearance is accompanied by pronoun…