Strong interlayer magnetic exchange coupling in La3Ni2O7-δ revealed by inelastic neutron scattering
The lattice structure and spin excitation spectra of powder La3Ni2O7-δ (a)The lattice structure of La3Ni2O7-δ;(b)The momentum dependence of the dynamical susceptibility χ” within E = [2.5, 3.5] meV;(c)The subtraction of…