Fig. 3: Thermal evolution of the magnetic excitation spectrum in BPCC at mz = 0.5 (Bz = 2.876 T).
From: Fingerprints of supersymmetric spin and charge dynamics observed by inelastic neutron scattering

a, b Measured neutron scattering intensities in sector q⊥ = π at temperatures of 150 and 840 mK. c, d Corresponding ladder MPS calculations at 0 and 840 mK. e, f Measured intensities in sector q⊥ = 0 at temperatures of 150 and 840 mK. g, h Corresponding ladder MPS calculations. Vertical arrows mark qh cuts analyzed in detail and horizontal arrows draw attention to the differences between t0 continua in the two q⊥ sectors.