Elementary magnons and interacting multi-magnon quasiparticles in the effective spin-$\frac{1}{2}$ kagome-staircase magnet Co${}_3$V${}_2$O${}_8$

Yuan Xiao, Jiajun Mo, Zhenmeng Jiang +6

The excitation spectrum of an anisotropic magnet provides a direct link between its microscopic Hamiltonian and interaction-driven quasiparticles. Here we use high-resolution time-…