Laplacian-level meta-generalized gradient approximation for solid and liquid metals

Modern meta-GGAs based on the local kinetic energy density can predict properties of diverse systems with near experimental accuracy, but unexpectedly describe metallic solids poorly due to their underestimation screening in metals. In this work, authors replace dependence a sophisticated meta-GGA an approximation electronic gradient and Laplacian. This Laplacian-level is tested set solid-state properties: geometries, cohesive energies, bulk moduli, ferromagnetic moments, monovacancy formation enthalpies. Most deficiencies parent describing metals are remedied its variant.