Abstract
Six recently developed exchange functionals for pairing with two different versions of van der Waals density functionals (vdW-DF) are tested for weakly bonded solids. The test, using 26 layered weakly bonded compounds, benchmarks the lattice constants against experimental data and the interlayer binding energies against reference data from the random-phase approximation (RPA). The investigated functionals tend to give interlayer binding energies higher than the RPA benchmark, and the overall performance for lattice constants is good. The exchange functionals optB86b and cx13 paired with the original vdW-DF and the B86R functional paired with vdW-DF2 are found to give particularly good results for equilibrium geometries.
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Dates
Type | When |
---|---|
Created | 11 years ago (Aug. 20, 2014, 8:30 p.m.) |
Deposited | 2 years, 1 month ago (July 3, 2023, 9:03 p.m.) |
Indexed | 2 weeks, 3 days ago (Aug. 6, 2025, 9:08 a.m.) |
Issued | 11 years ago (Aug. 20, 2014) |
Published | 11 years ago (Aug. 20, 2014) |
Published Online | 11 years ago (Aug. 20, 2014) |
Published Print | 11 years ago (Aug. 21, 2014) |
Funders
1
Suomen Akatemia
10.13039/501100002341
Research Council of FinlandRegion: Europe
gov (Universities (academic only))
Labels
4
- Suomen Akatemia
- Finlands Akademi
- Academy of Finland
- AKA
Awards
2
- COMP Centre of Excellence
- 263416
@article{Bj_rkman_2014, title={Testing several recent van der Waals density functionals for layered structures}, volume={141}, ISSN={1089-7690}, url={http://dx.doi.org/10.1063/1.4893329}, DOI={10.1063/1.4893329}, number={7}, journal={The Journal of Chemical Physics}, publisher={AIP Publishing}, author={Björkman, Torbjörn}, year={2014}, month=aug }