Fig. 3: Fits with MFL model to extract electronic Raman scattering response.
a Raman spectrum at 20 K in \({{{X}}}^{\prime}{{{Y}}}^{\prime}\) (blue circles), with the details of the fit to our phenomenological marginal Fermi-liquid model (solid line in black, see text). The solid line in blue is the best-suited e-continuum scattering according to the marginal Fermi-liquid (MFL) model in Eq. (4). Phonon modes are shaded in orange (Lorentzian lineshape) and green or purple (Fano lineshapes). The inset displays a representative attempt to fit these data with Fermi-liquid model. b Temperature dependence of the \({{{X}}}^{\prime}{{{Y}}}^{\prime}\) Raman spectra, after subtraction of the symmetrical (Lorentzian) phonon lines. The data were vertically shifted for representation. The solid lines are the best-suited e-continuum scattering backgrounds according to the MFL model, including the coupling to the phonons ~400 m−1. c Raman spectra (χ″(ω)) in XY at 20 K. d Temperature dependence of the electronic part or the Raman response in XY. The data were vertically shifted for representation. The solid lines are the best-suited e-continuum scattering backgrounds according to the MFL model.
