Static and dynamic properties in magnetic neodymium honeycomb lattice

Conventionally, domain wall kinetics is considered to be the driving mechanism behind the dynamic behavior in nanostructured magnets, which requires magnetic field or electric current application. However, at length scales approaching the single domain limit, this is not physically possible—rather a new dynamic phenomenon due to quasi-particle mediation can emerge. In our recent elastic Small Angle Neutron Scattering measurements on 2D constricted nanomagnetic lattices with honeycomb motif, made of neodymium element, we observe temperature dependence of integrated neutron intensity at higher order peaks along with the structure peaks. Despite the well-known antiferromagnetic transition of bulk Neodymium around 20K, surprisingly we observe a monotonous decrease of intensity with an increase in temperature which hints towards magnetism that persists well above 20 K. More recently our Neutron Spin Echo measurements revealed a fast dynamic lattice with a relaxation rate comparable to that found in our magnetic permalloy honeycomb lattice. This is in excellent agreement with our theoretical studies which suggest the existence of topological quasi-particles which float along the length of the honeycomb units contributing to the fast dynamics in the system without any externally applied stimulus.