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Restoring the Density-Gradient Expansion for Exchange in Solids and Surfaces

Physical Review Letters · 2008 · Vol. 100(13) · pp. 136406–136406
John P. PerdewAdrienn RuzsinszkyGábor I. CsonkaOleg A. VydrovGustavo E. ScuseriaLucian A. ConstantinXiaolan ZhouKieron Burke

Abstract

Popular modern generalized gradient approximations are biased toward the description of free-atom energies. Restoration of the first-principles gradient expansion for exchange over a wide range of density gradients eliminates this bias. We introduce a revised Perdew-Burke-Ernzerhof generalized gradient approximation that improves equilibrium properties of densely packed solids and their surfaces.

Advanced Chemical Physics StudiesZeolite Catalysis and Synthesisnanoparticles nucleation surface interactionsRange (aeronautics)Density gradientConcentration gradientAtom (system on chip)PhysicsStatistical physicsMaterials scienceQuantum mechanicsChemistryComputer science
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