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This thesis is concerned with the theoretical study of the adsorption of molecules and thin films to single-crystal metal surfaces. First-principles electronic calculations are performed in the framework of density functional theory in the local density ap ...
A review discusses the basic concepts of the Car-Parrinello method, some of the recent methodol. extensions, focusing on aspects with potential interest for applications in medicinal chem., and the advantages and limitations of new modeling tools. ...
We have calculated the maximally localized Wannier functions of MnO in its antiferromagnetic (AFM) rhombohedral unit cell, which contains two formula units. Electron Bloch functions are obtained with the linearized-augmented-plane-wave method within both t ...
Several methods to address aromaticity in terms of nucleus-independent chem. shifts (NICS) are compared. These include NICS at the ring center NICS(0), NICS 1 .ANG. above the ring plane NICS(1), arom. ring current shielding (ARCS), and dissected NICS, i.e. ...
Local density functional theory within the framework of the Car-Parrinello method has been used to study the structural parameters and the energetics of offretite, when a Si4+ ion is substituted by (Al3+, H+). The calculations have been performed on a peri ...
In plane wave based electronic structure calcns. the interaction of core and valence electrons is usually represented by at. effective core potentials. They are constructed in such a way that the shape of the at. valence orbitals outside a certain core rad ...
We investigate the electronic structure of over-coordinated defects in amorphous silicon via density-functional total-energy calculations, with the aim of understanding the relationship between topological and electronic properties on a microscopic scale. ...
We add an effective atom-centered nonlocal term to the exchange-correlation potential in order to cure the lack of London dispersion forces in std. d. functional theory. Calibration of this long-range correction is performed using d. functional perturbatio ...
Using density functional calculations in the generalized gradient approximation, the energetics of competing atomic processes occuring during the oxidation of silicon are evaluated. Simple molecular systems are used to model the breaking of Si-Si and Si-O ...
