Fig. 4: Temperature dependent electrical resistivity and fermi surface.
From: Interplay between disorder and electronic correlations in compositionally complex alloys
a Electrical resistivity (ρ) measurements vs. temperature (T) for Ni, FeNi, CrFeNi, CrFeCoNi, and CrMnFeCoNi. The ternary to quinary alloys show a sharp increase in residual resistivity, while Ni and FeNi exhibit quasiparticle temperature dependency. The LDA + DMFT calculation for CrMnFeCoNi is shown by the yellow dashed line. (b) Comparison of experimental resistivity for CrMnFeCoNi (black line) with LDA (yellow dashed line) and LDA + DMFT (blue line) calculations, normalized by their residual resistivity. The LDA + DMFT results show better agreement with experimental data, particularly at higher temperatures, where states farther from the Fermi edge contribute to transport. (c and d) Fermi surface of CrMnFeCoNi calculated using LDA (c) and LDA + DMFT (d). Color maps represent spectral intensity. Both graphs show smeared Fermi surfaces, with chemical disorder significantly affecting states near EF. Many-body effects do not introduce additional smearing.
