Fig. 4: Temperature dependence of the E = 0.3 meV magnetic excitations across Tc.
From: High-energy magnetic excitations from heavy quasiparticles in CeCu2Si2

E = 0.3 meV constant-energy maps of the [H, H, L] plane for a T = 0.3 K, b T = 1.6 K, and c their difference. d Cuts along (H, H, 1.5) from maps in (a) and (b), obtained by binning data with 1.4 < L < 1.6. e The difference of cuts in (d). Data in this figure were measured using Ef = 3 meV. All vertical error bars represent statistical errors of 1 s.d.