Accurate molecular van der Waals interactions from ground-state electron density and free-atom reference data
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It is shown that the effective atomic C6 coefficients depend strongly on the bonding environment of an atom in a molecule, and the van der Waals radii and the damping function in the C6R(-6) correction method for density-functional theory calculations.Abstract:
We present a parameter-free method for an accurate determination of long-range van der Waals interactions from mean-field electronic structure calculations. Our method relies on the summation of interatomic C6 coefficients, derived from the electron density of a molecule or solid and accurate reference data for the free atoms. The mean absolute error in the C6 coefficients is 5.5% when compared to accurate experimental values for 1225 intermolecular pairs, irrespective of the employed exchangecorrelation functional. We show that the effective atomic C6 coefficients depend strongly on the bonding environment of an atom in a molecule. Finally, we analyze the van der Waals radii and the damping function in the C6R � 6 correction method for density-functional theory calculations.read more
Citations
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Effect of the damping function in dispersion corrected density functional theory
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Paolo Giannozzi,Oliviero Andreussi,Oliviero Andreussi,Thomas Brumme,Oana Bunau,M. Buongiorno Nardelli,Matteo Calandra,Roberto Car,Carlo Cavazzoni,Davide Ceresoli,Matteo Cococcioni,Nicola Colonna,Ivan Carnimeo,A. Dal Corso,S. de Gironcoli,Pietro Delugas,Robert A. DiStasio,Andrea Ferretti,Andrea Floris,Guido Fratesi,Giorgia Fugallo,Ralph Gebauer,Uwe Gerstmann,Feliciano Giustino,Tommaso Gorni,Tommaso Gorni,Junteng Jia,Mitsuaki Kawamura,Hsin-Yu Ko,Anton Kokalj,Emine Kucukbenli,Michele Lazzeri,M. Marsili,Nicola Marzari,Francesco Mauri,Ngoc Linh Nguyen,Huy-Viet Nguyen,Alberto Otero-de-la-Roza,Lorenzo Paulatto,Samuel Poncé,Dario Rocca,Dario Rocca,Riccardo Sabatini,Biswajit Santra,Martin Schlipf,Ari P. Seitsonen,Ari P. Seitsonen,Alexander Smogunov,Iurii Timrov,Timo Thonhauser,Paolo Umari,Nathalie Vast,Xifan Wu,Stefano Baroni +53 more
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Journal ArticleDOI
Advanced capabilities for materials modelling with Quantum ESPRESSO
Paolo Giannozzi,Oliviero Andreussi,Oliviero Andreussi,Thomas Brumme,Oana Bunau,M. Buongiorno Nardelli,Matteo Calandra,Roberto Car,Carlo Cavazzoni,Davide Ceresoli,Matteo Cococcioni,Nicola Colonna,Ivan Carnimeo,A. Dal Corso,S. de Gironcoli,Pietro Delugas,Robert A. DiStasio,Andrea Ferretti,Andrea Floris,Guido Fratesi,Giorgia Fugallo,Ralph Gebauer,Uwe Gerstmann,Feliciano Giustino,Tommaso Gorni,Tommaso Gorni,Junteng Jia,Mitsuaki Kawamura,Hsin-Yu Ko,Anton Kokalj,Emine Kucukbenli,Michele Lazzeri,M. Marsili,Nicola Marzari,Francesco Mauri,Ngoc Linh Nguyen,Huy-Viet Nguyen,Alberto Otero-de-la-Roza,Lorenzo Paulatto,Samuel Poncé,Dario Rocca,Dario Rocca,Riccardo Sabatini,Biswajit Santra,Martin Schlipf,Ari P. Seitsonen,Ari P. Seitsonen,Alexander Smogunov,Iurii Timrov,Timo Thonhauser,Paolo Umari,Nathalie Vast,Xifan Wu,Stefano Baroni +53 more
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References
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Journal ArticleDOI
Semiempirical GGA-type density functional constructed with a long-range dispersion correction.
TL;DR: A new density functional of the generalized gradient approximation (GGA) type for general chemistry applications termed B97‐D is proposed, based on Becke's power‐series ansatz from 1997, and is explicitly parameterized by including damped atom‐pairwise dispersion corrections of the form C6 · R−6.
Journal ArticleDOI
Van der Waals Density Functional for General Geometries
TL;DR: The proposed functional, which includes van der Waals forces in a seamless fashion, is applied to rare gas and benzene dimers, where it is shown to give a realistic description.
Journal ArticleDOI
Accurate description of van der Waals complexes by density functional theory including empirical corrections
TL;DR: The DFT‐D‐BLYP model seems to be even superior to standard MP2 treatments that systematically overbind, and the approach is suggested as a practical tool to describe the properties of many important van der Waals systems in chemistry.
Journal ArticleDOI
The Influence of Retardation on the London-van der Waals Forces
Hendrik Casimir,D. Polder +1 more
TL;DR: In this article, the influence of retardation on the energy of interaction between two neutral atoms is investigated by means of quantum electrodynamics, and it is shown that the influence leads to a reduction of the interaction energy by a correction factor which decreases monotonically with increasing distance.
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