Journal
JOURNAL OF CHEMICAL PHYSICS
Volume 112, Issue 6, Pages 2643-2649Publisher
AIP Publishing
DOI: 10.1063/1.480838
Keywords
-
Ask authors/readers for more resources
The meta-GGA functional recently proposed by Perdew [Phys. Rev. Lett. 82, 2544 (1999)] goes beyond the generalized gradient approximations (GGAs) since it employs the noninteracting kinetic energy density in addition to the local density and the gradient of the local density. In this paper, we focus on thermochemistry and present an extensive assessment of the meta-GGA functional. We find that for atomization energies meta-GGA is as accurate as the computationally more involved Perdew-Burke-Ernzerhof (PBE) hybrid scheme. However, the geometries and frequencies obtained with meta-GGA are worse than those obtained with PBE or PBE hybrid. We give a detailed analysis of our results and propose explanations for the observed differences between PBE, PBE hybrid, and meta-GGA. Furthermore, we address the question whether the parameters in the meta-GGA functional are optimal for our benchmark set. (C) 2000 American Institute of Physics. [S0021-9606(00)31304-6].
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available