High order magnon bound states in the quasi-one-dimensional antiferromagnet $\alpha$-NaMnO${}_2$

Rebecca L. Dally, Alvin J. R. Heng, Anna Keselman +4

Here we report on the formation of two and three magnon bound states in the quasi-one-dimensional antiferromagnet $\alpha$-NaMnO${}_2$, where the single-ion, uniaxial anisotropy inherent…