Figure 3: Linewidth broadening of magneto-elastic excitation.
From: Spontaneous decays of magneto-elastic excitations in non-collinear antiferromagnet (Y,Lu)MnO3
(a) The neutron-scattering data along the CBD direction (middle) and the calculated dynamical structure factor within the linear spin wave theory (bottom). Observed linewidth broadening of the top mode (square) together with the calculated result from the 1/S approximation (line) and the experimental resolution (dashed line) (top) for YMnO3 (left) and LuMnO3 (right). (b) Observed linewidth of the top mode for LuMnO3 (contour map) and (c) calculated intrinsic broadening of the top mode using the model Hamiltonian, equation (2). The experimental linewidth of the top mode was estimated by using multi-Gaussian functions and the typical results are shown in Supplementary Fig. 3.
