Properties
What is the AMS Driver?
AMS Driver handles all changes in the simulated system’s geometry, e.g. during a geometry optimization or molecular dynamics calculation, using the so-called “engines” like ADF, BAND or DFTB for the calculation of energies and forces. In summary, one might say that the AMS driver steers the engines across the potential energy surface.
Properties
The AMS driver can compute a variety of properties from the forces and energies provided by our various compute engines, e.g. ADF or ReaxFF. Interfacing your own compute engine or other external codes to the AMS driver, is straightforward using our interface to the popular atomic simulation environment (ASE) or the AMS external engine feature.
Features
An extensive table of properties and engines can be found in the AMS documentation, among many others, it includes
- Diverse Molecular Dynamics and Monte Carlo algorithms
- Potential energy surface exploration (minima, maxima transition states, reaction paths, etc…)
- Advanced geometry optimizations
- Transition state searches and characterization
- Stress tensors and elasticity
- Phonons
- Normal modes and thermodynamical properties
- Vibrational spectra
- more
Application
Videos
X-Ray Absorption Spectroscopy, X-ray photoelectron spectroscopy
SCM’s expert Erik van Lenthe demonstrates how to calculate X-ray absorption spectra (XANES / NEXAFS) with core excitations in ADF. The demo features spin-orbit coupling, TDDFT and the fast transition potential method.
Transition states
Check out this video on finding transition states with the Amsterdam Modeling Suite, leveraging DFTB as a quick first method (see also Ziegler-Natta tutorial).