Magnetic excitations from the two-dimensional interpenetrating Cu framework in Ba${}_2$Cu${}_3$O${}_4$Cl${}_2$

P. Babkevich, N. E. Shaik, D. Lançon +12

We report detailed neutron scattering studies on Ba${}_2$Cu${}_3$O${}_4$Cl${}_2$. The compound consists of two interpenetrating sublattices of Cu, labeled as Cu${}_{\mathrm{A}}$ and Cu${}_{\mathrm{B}}$,…