Effect of iron vacancies on the magnetic order and spin dynamics of the spin ladder BaFe${}_{2-\delta }$S${}_{1.5}$Se${}_{1.5}$

Zengjia Liu, Xiao-Sheng Ni, Lisi Li +11

Quasi-one-dimensional iron chalcogenides possess various magnetic states depending on the lattice distortion, electronic correlations, and presence of defects. We present neutron d…