Application of Diffusion Monte Carlo to Materials Dominated by van der Waals Interactions
                            Journal Article
                            ·
                            
                            · Journal of Chemical Theory and Computation
                            
                        
                    van der Waals forces are notoriously difficult to account for from first principles. We have performed extensive calculations to assess the usefulness and validity of diffusion quantum Monte Carlo when predicting van der Waals forces. We present converged results for noble gas solids and clusters, archetypical van der Waals dominated systems, as well as the highly relevant π–π stacking supramolecular complex: DNA + intercalating anticancer drug ellipticine. Analysis of the calculated binding energies underscores the existence of significant interatomic many-body contributions.
- Research Organization:
- Argonne National Laboratory (ANL)
- Sponsoring Organization:
- Argonne National Laboratory - Argonne Leadership Computing Facility; Sandia National Laboratories; Swiss National Science Foundation (SNSF); USDOE Office of Science - Office of Basic Energy Sciences - Predictive Theory and Modeling for Materials and Chemical Science Program
- DOE Contract Number:
- AC02-06CH11357
- OSTI ID:
- 1392403
- Journal Information:
- Journal of Chemical Theory and Computation, Journal Name: Journal of Chemical Theory and Computation Journal Issue: 8 Vol. 10; ISSN 1549-9618
- Publisher:
- American Chemical Society
- Country of Publication:
- United States
- Language:
- English
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