Evidence for SrHo2O4 and SrDy2O4 as model J1-J2 zig-zag chain materials
  Neutron diffraction and inelastic spectroscopy is used to characterize the magnetic Hamiltonian of SrHo2O4 and SrDy2O4. Through a detailed computation of the crystal-field levels we find site- dependent anisotropic single-ion magnetism in both materials and diffraction measurements show the presence of strong one-dimensional spin correlations. Our measurements indicate that competing interactions of the zig-zag chain, combined with frustrated interchain interactions, play a crucial role in stabilizing spin-liquid type correlations in this series. 
Amy Poole, Vladimir Pomjakushin, Anne-Christine Uldry, Bernhard   Delley, Bobby Prevost, Alexandre Desilets-Benoit, Andrea D...
cond-mat.str-el cond-mat.mtrl-sci