Fragmented monopole crystal, dimer entropy and Coulomb interactions in Dy${}_2$Ir${}_2$O${}_7$

V. Cathelin, E. Lefrançois, J. Robert +12

Neutron scattering, specific heat and magnetisation measurements on both powders and single crystals reveal that Dy${}_2$Ir${}_2$O${}_7$ realizes the fragmented monopole crystal state in…