Screened exchange dynamical mean-field theory and its relation to density functional theory: SrVO₃and SrTiO₃

We present the first application of a recently proposed electronic-structure scheme to transition metal oxides: screened exchange dynamical mean-field theory includes non-local exchange beyond the local density approximation and dynamical correlations beyond standard dynamical mean-field theory. Our results for the spectral function of SrVO₃ are in agreement with the available experimental data, including photoemission spectroscopy and thermodynamics. Finally, the 3d⁰ compound SrTiO₃ serves as a test case to illustrate how the theory reduces to the band structure of standard electronic-structure techniques for weakly correlated compounds.