Figure 1

Real part of the optical conductivity ${\sigma }_1$ in Ba122 (top) in the PM ($T=150\mathrm{K}$) and SDW ($T=50\mathrm{K}$) states and Co-Ba122 (bottom) in the PM normal state and superconducting state ($T=7\mathrm{K}$). For Ba122, we illustrate the necessary integration cutoffs $\Omega =777$, 969, and $2000{\mathrm{cm}}^{-1}$ in order to recover the predicted LDA, $\mathrm{LDA}+\mathrm{DMFT}$, and experimentally observed PM state kinetic energy values, respectively. The third cutoff demonstrates that the spectral weight transfer due to the SDW gaps extends to $2000{\mathrm{cm}}^{-1}$ and not above.Reuse & Permissions

Figure 2

(a)–(c) The kinetic energy ratio $K_{\exp }(\Omega )/K_{\mathrm{LDA}}$ in Ba122 and Co-Ba122, as a function of integration cutoff value $\Omega$ [Eq. (1)]. The ratio for Ba122 in the PM (a) and SDW (b) states and for Co-Ba122 in the normal PM state (c). The numbers and arrows indicate the results of the four methods for determining the kinetic energy integration cutoff, described in 8. (d) The temperature-averaged results of the kinetic energy ratio $K_{\exp }(\Omega )/K_{\mathrm{theory}}$ in the PM and SDW states, compared with both LDA and $\mathrm{LDA}+\mathrm{DMFT}$ results, including the theoretical kinetic energy values. The triangles show the value of the ratio of the two theoretical kinetic energies determined via LDA and $\mathrm{LDA}+\mathrm{DMFT}$ in the PM and SDW states. The values from theory are $K_{\mathrm{LDA}}^{\mathrm{PM}}=(21133{\mathrm{cm}}^{-1}{)}^2$, $K_{\mathrm{LDA}}^{\mathrm{SDW}}=(6937{\mathrm{cm}}^{-1}{)}^2$, $K_{\mathrm{DMFT}}^{\mathrm{PM}}=(12905{\mathrm{cm}}^{-1}{)}^2$, and $K_{\mathrm{DMFT}}^{\mathrm{SDW}}=(8147{\mathrm{cm}}^{-1}{)}^2$.Reuse & Permissions

Figure 3

Ratio of the integrated conductivity $K_{\exp }(T,\Omega )/K_{\exp }(295\mathrm{K},\Omega )$ as a function of cutoff value $\Omega$ and temperature over the entire measured frequency range in Ba122 (top panel) and Co-Ba122 (bottom panel). The ratios are taken with respect to the $T=295\mathrm{K}$ data in order to display the temperature evolution of the PM and SDW SW transfer. The two vertical dashed bars show the energy scale below which all of the SW transfer takes place, for both the PM and SDW states. The energy scale of SW transfer in the PM state is $\approx 8000{\mathrm{cm}}^{-1}$ and in the SDW state is $\approx 2000{\mathrm{cm}}^{-1}$. Inset: Temperature dependence of the kinetic energy of the Drude response, normalized to the room temperature value, at a cutoff $\Omega =1450{\mathrm{cm}}^{-1}$.Reuse & Permissions