240 citations · 1.1k across the 36 of their papers we have counts for
3 papers · 1 filter
Dirac magnons, nodal lines, and nodal plane in elemental gadolinium
Allen Scheie, Pontus Laurell, Paul A. McClarty +4
We investigate the magnetic excitations of elemental gadolinium (Gd) using inelastic neutron scattering, showing that Gd is a Dirac magnon material with nodal lines at and noda…
Spin exchange Hamiltonian and topological degeneracies in elemental gadolinium
Allen Scheie, Pontus Laurell, Paul A. McClarty +4
We present a comprehensive study of the magnetic exchange Hamiltonian of elemental Gadolinium. We use neutron scattering to measure the magnon spectrum over the entire Brillouin zo…
Witnessing entanglement in quantum magnets using neutron scattering
A. Scheie, Pontus Laurell, A. M. Samarakoon +6
We demonstrate how quantum entanglement can be directly witnessed in the quasi-1D Heisenberg antiferromagnet KCuF. We apply three entanglement witnesses --- one-tangle, two-tan…