An Ising model on a 3D honeycomb zigzag-ladder lattice: a solution to the ground-state problem and application to the SrRE${}_2$O${}_4$ and BaRE${}_2$O${}_4$ magnets

Yu. I. Dublenych, O. A. Petrenko

An exact solution (incomplete) of the ground-state problem for an Ising model in an external field on a 3D honeycomb zigzag-ladder lattice with two types of sites is found. It is s…