Universal dynamic magnetism in Yb pyrochlores with disparate ground states
Universal dynamic magnetism in Yb pyrochlores with disparate ground states
The ytterbium pyrochlore magnets, ${\mathrm{Yb}}_{2}{B}_{2}{\mathrm{O}}_{7}$ ($B=\mathrm{Sn},\mathrm{Ti},\mathrm{Ge}$) are well described by ${S}_{\text{eff}}=1/2$ quantum spins decorating a network of corner-sharing tetrahedra and interacting via anisotropic exchange. Structurally, only the nonmagnetic $B$-site cation, and hence primarily the lattice parameter, changes across the series. Nonetheless, a range of magnetic behaviors is observed: the low-temperature …