Fig. 3: Temperature dependence of the phonon spectra at the wave vector of the 3D charge-density-wave order and away from it.
From: Hybridization of lattice and charge order excitations in a superconducting cuprate

Temperature dependence of the experimental χ″(Q, ω) measured at the reciprocal space wave vectors a Q = (0 0.34 7.24), b Q = (0 1.77 1.02), c \({{{{\bf{Q}}}}}_{{{{\bf{3D}}}}}^{{{{\bf{trans}}}}}\) = (0 0.315 7), d \({{{{\bf{Q}}}}}_{{{{\bf{3D}}}}}^{{{{\bf{long}}}}}\) = (0 1.685 1), e Q = (−0.082 0.318 7) and f Q = (−0.082 1.685 1). The vertical axis scales are common for panels (a), (c) and (e) and for panels (b), (d) and (f).