Giant Electron-Phonon Anomaly in Doped La₂CuO₄and Other Cuprates

Figure 22

(b) Inelastic scattering intensity of YBa₂Cu₃O_6.95 at 𝐐=(3.25,0,0) as a function of temperature, determined with the triple-axis spectrometer at the HFIR. Data were smoothed once to reduce noise. (a) Temperature dependence of the intensity difference (I1)-(I2), where I(1) is the average intensity from 56 to 68 meV, I2 from 51 to 55 eV, at 𝐐=(3.25,0,0). 𝑇_𝑐 of the sample was 93 K (from [73]).

(a)

(b)