Fig. 1: The spinon spectra in YbAlO3 at different temperatures.
From: High-temperature quantum coherence of spinons in a rare-earth spin chain
A1 Schematic illustration of spinons as topological defects in antiferromagnetic spin chain; spinon pairs measured in our INS experiments are created by pairwise nearest-spin flips. A2–A5 schematics of how half-filled fermion band gives rise to two-spinon continuum boundaries (see also Supplementary Information). A–D Color contour maps of the spectral density of the measured neutron scattering intensity at different temperatures: 2 K, 10 K, 40 K, 100 K, top to bottom. These data are integrated in the dispersionless transverse directions with K = [−1.0, 1.0] and H = [ − 0.25, 0.25]. E–H Fits to model constructed from DMRG calculations with Lorentzian broadening accounting for spinon lifetime, as reported in the main text, directly comparable to neutron data. I–L Resolution-corrected DMRG calculations without additional Lorentzian broadening accounting for spinon finite lifetime for comparison.
