9 papers
The UZH protocol: Separating errors and constructing improved CP2K basis sets and pseudopotentials
Hossein Mirhosseini, Tiziano M. A. Müller, Matthias Krack +2
Reliable density-functional simulations require numerical settings whose residual errors are smaller than the chemical and materials trends being interpreted. In CP2K/Quickstep, th…
Finite-temperature Fe K-edge X-ray absorption simulations reveal local structural dynamics of an iron(II) photosensitizer in solution and the crystalline phase
Patrick Müller, Lorena Fritsch, Matthias Bauer +1
Interpreting metal K-edge spectra of flexible photosensitizers requires a structural model that separates electronic signatures from thermal motion, solvent disorder, and crystal-p…
Terahertz-induced local-field dynamics and transient birefringence in aqueous electrolytes
Naveen Kumar Kaliannan, Thomas D. Kühne, Hossam Elgabarty
Terahertz Kerr-effect (TKE) spectroscopy provides a time-domain optical probe of the intermolecular structural dynamics of liquids, but the measured birefringence can only be inter…
Best practices for second-generation Car-Parrinello ab initio molecular dynamics with CP2K/Quickstep
Thomas D. Kühne
Second-generation Car--Parrinello \textit{ab initio} molecular dynamics (CP2G AIMD) combines a Born--Oppenheimer-like nuclear equation of motion with a predictor-corrector propagat…
Separable Force Matching of PBE0 Hybrid-Functional Reference Forces for Path-Integral Simulations of Liquid Water
Jan Kessler, Thomas Spura, Kristof Karhan +1
Force-matched water models provide a practical route from first-principles reference data to long classical and path-integral molecular simulations. Previous flexible four-site pot…
Importance of nuclear quantum effects on the structure of supercooled water around its liquid--liquid critical point
Michael Beerbaum, Julian Heske, Jure Gujt +1
Supercooled water is expected to exhibit a liquid--liquid phase transition between low- and high-density liquid states, possibly terminating in a liquid--liquid critical point in t…