Fig. 4
From: Tomonaga–Luttinger liquid behavior and spinon confinement in YbAlO3
Magnetic field tuned spin excitation of YbAlO3. a–c Inelastic neutron scattering spectra with background corrected measured at 0.05 K, in different magnetic fields applied along the a-axis, of 0.6 T (a), 0.8 T (b), and 1.0 T (c). d–f The Q-cuts of in-field experimental data along wave vector (00L), integrated over H = [−0.1; 0.1] r.l.u., K = [−0.6; 0.2] r.l.u., and E = [0.05; 0.06] meV. The peak positions indicate the zero energy soft modes, where the gap closes. In the raw data, the error bar is equal to the square root of the number of counts (Poisson statistics). In the processed data, where we have various efficiency corrections and we need to account for different measurement statistics at each point, we used the rules for propagation of errors of uncorrelated measurements. g–i DMRG simulated spin excitation spectrum, with staggered field Bst = 0, and external field Bex/J = 0.8 (g), Bex/J = 1.2 (h), and Bex/J = 1.6 (i)
