Magnetic transitions in the topological magnon insulator Cu(1,3-bdc)
  Topological magnon insulators are a new class of magnetic materials that possess topologically nontrivial magnon bands. As a result, magnons in these materials display properties analogous to those of electrons in topological insulators. Here, we present magnetization, specific heat, and neutron scattering measurements of the ferromagnetic kagome magnet Cu(1,3-bdc). Our measurements provide a detailed description of the magnetic structure and interactions in this material, and confirm that it is an ideal prototype for topological magnon physics in a system with a simple spin Hamiltonian. 
R. Chisnell, J. S. Helton, D. E. Freedman, D. K. Singh, F. Demmel, C.   Stock, D. G. Nocera, Y. S. Lee
cond-mat.str-el