Electrode Dynamics from First Principles

Lattice dynamics of anharmonic solids from first principles

Hydration of alkali ions from first principles molecular dynamics revisited.

Structural and dynamical properties of the hydration of Li(+), Na(+), and K(+) in liquid water at ambient conditions were studied by first principles molecular dynamics. Our simulations successfully captured the different hydration behavior shown by the three alkali ions as observed in experiments. The present analyses of the dependence of the self-diffusion coefficient and rotational correlati...

Spin crossover in ferropericlase from first-principles molecular dynamics.

Ferropericlase, (Mg,Fe)O, is the second-most abundant mineral of Earth's lower mantle. With increasing pressure, the Fe ions in the material begin to collapse from a magnetic to nonmagnetic spin state. We present a finite-temperature first-principles phase diagram of this spin crossover, finding a broad pressure range with coexisting magnetic and nonmagnetic ions due to favorable enthalpy of mi...

Acidity constants of lumiflavin from first principles molecular dynamics simulations.

We have computed the free energy profiles of the deprotonation reactions of lumiflavin in the semiquinone and fully reduced oxidation states using constrained DFT-based molecular dynamics simulations. In the semiquinone state, the N5 nitrogen atom and the N1 nitrogen atom can become protonated. We find, in agreement with experiment, that the N5 site is the predominant proton acceptor in the sem...

First Principles Molecular Dynamics Simulation of Solution

We summarize the preliminary results concerning the hydration structure of trivalent rare-earth ions and the charge localization process in DNA fibers obtained during this fiscal year using a first principles molecular dynamics approach. In the first case, we demonstrated that the free energy surface obtained using the metadynamics based on the Car-Parrinello molecular dynamics for the hydratio...