Line Plot from Scientific Research

τ from LDA + DMFT calculations for Fe and Ni. Top: Black lines show calculated τ for pure elements in their natural crystal structures; yellow lines show τ for pure metals within the fcc structure and CrMnFeCoNi lattice constant (γ-Fe). Experimental values are from photoemission spectroscopy (PES, below EF) 43 and time-resolved two-photon photoemission (TR-2PPE, above EF) 44, 45, 46 of pure elements. Ni shows negligible variation, while γ-Fe exhibits notably reduced lifetimes. Bottom: Blue lines correspond to the CrMnFeCoNi HEA results. Green lines show results with increased U for Fe and Ni (2 eV and 4 eV, respectively). Increasing U reduces τ, particularly for Ni at E > EF.

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