Dynamics of a bond-disordered $S=1$ quantum magnet near $z=1$ criticality

K. Yu. Povarov, E. Wulf, D. Hüvonen +3

Neutron scattering is used to study NiCl${}_{2-2x}$Br${}_{2x}\cdot$4SC(NH${}_2$)${}_2$, $x=0.06$, a bond-disordered modification of the well-known gapped $S=1$ antiferromagnetic quantum sp…