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Adsorption of ammonia at NH3/NH2/H covered GaN(0001) surface was analyzed using results of ab initio calculations. The whole configuration space of partially NH3/NH2/H covered GaN(0001) surface was divided into zones differently pinned…

Materials Science · Physics 2016-11-09 Pawel Kempisty , Stanislaw Krukowski

The adsorption of CO on the Pt(111) surface in a root3 x root3 pattern has been studied with the gradient corrected functional of Perdew and Wang and the B3LYP hybrid functional. A slab which is periodic in two dimensions is used to model…

Materials Science · Physics 2009-11-10 K. Doll

Density-functional-theory calculations for the adsorption of molecular nitrogen on ruthenium surface are reported. It is found that nitrogen molecule is adsorbed while standing perpendicular to the triangular surface of ruthenium. The…

Plateaus in water adsorption isotherms on hydroxylated BeO surfaces suggest significant differences between the hydroxylated (100) and (001) surface structures and reactivities. Density functional theory structures and energies clarify…

Chemical Physics · Physics 2007-05-23 Maria A. Gomez , Lawrence R. Pratt , Joel D. Kress , D. Asthagiri

Using density-functional theory (DFT) we investigate the incorporation of oxygen directly below the Rh(111) surface. We show that oxygen incorporation will only commence after nearly completion of a dense O adlayer (\theta_tot = 1.0…

Materials Science · Physics 2009-11-07 M. Veronica Ganduglia-Pirovano , Karsten Reuter , Matthias Scheffler

We study the physisorption of organic oligomers on the ZnO($10\bar{1}0$) surface using first-principles density-functional theory and non-empirical embedding methods. We find that both in-plane location and orientation of the molecules are…

Materials Science · Physics 2011-11-11 F. Della Sala , S. Blumstengel , F. Henneberger

The structure of solid oxygen has been studied at pressures from 50 to 140~GPa using static structure search methods and molecular dynamics simulations with density functional theory and a hybrid exchange functional. Several crystalline…

Materials Science · Physics 2023-09-26 Sabri F. Elatresh , V. Askarpour , S. A. Bonev

We analyze, with Density Functional Theory (DFT) calculations, the adsorption energies of Li$_2$O$_2$, Na$_2$O$_2$ and NaO$_2$ on clean and oxygen passivated TiC (111) surfaces. We show, that after deposition of two molecular layers of…

Chemical Physics · Physics 2018-09-10 Keren Raz , Polina Tereshchuk , Diana Golodnitsky , Amir Natan

We have experimentally determined the lateral registry and geometric structure of free-base porphine (2H-P) and copper-metalated porphine (Cu-P) adsorbed on Cu(111), by means of energy-scanned photoelectron diffraction (PhD), and compared…

The structural, vibrational, energetic and electronic properties of hydrogen at the stoichiometric RuO2(110) termination are studied using density functional theory. The oxide surface is found to stabilize both molecular and dissociated H2.…

Materials Science · Physics 2007-05-23 Qiang Sun , Karsten Reuter , Matthias Scheffler

Using density-functional theory in combination with a thermodynamic formalism we calculate the relative stability of various structural models of the polar O-terminated (000-1)-O surface of ZnO. Model surfaces with different concentrations…

Materials Science · Physics 2009-11-10 B. Meyer

During the exothermic adsorption of molecules at solid surfaces dissipation of the released energy occurs via the excitation of electronic and phononic degrees of freedom. For metallic substrates the role of the nonadiabatic electronic…

Materials Science · Physics 2015-03-19 Jörg Meyer , Karsten Reuter

We have investigated ozone adsorption on graphene using the ab initio density functional theory method. Ozone molecules adsorb on graphene basal plane with binding energy of 0.25 eV, and the physisorbed molecule can chemically react with…

Materials Science · Physics 2009-06-15 Geunsik Lee , Bongki Lee , Jiyoung Kim , Kyeongjae Cho

While the diffusion of hydrogen on silicon surfaces has been relatively well characterised both experimentally and theoretically, the diffusion around corners between surfaces, as will be found on nanowires and nanostructures, has not been…

Materials Science · Physics 2014-05-19 Richard Smith , Veronika Brazdova , David R. Bowler

A comprehensive phase diagram of lowest-energy structures and compositions of the rutile TiO_2(110) surface in equilibrium with a surrounding gas phase at finite temperatures and pressures has been determined using density functional theory…

Materials Science · Physics 2009-11-13 Piotr M. Kowalski , Bernd Meyer , Dominik Marx

It is commonly believed that organic molecules are physisorbed on the ideal non-polar surfaces of wide band gap insulators with limited variation of the electronic properties of the adsorbate molecule. On the basis of first principles…

Materials Science · Physics 2010-06-10 Wei Chen , Christoph Tegenkamp , Herbert Pfnür , Thomas Bredow

Here we investigate whether well-known DFT-GGA errors in predicting the chemisorption energy ($E_{\rm chem}$) of CO on transition metal surfaces manifest in analogous NO chemisorption systems. To verify the occurrence of DFT-GGA…

Chemical Physics · Physics 2013-07-08 Xu Huang , Sara E. Mason

The potential energy surface (PES) of dissociative adsorption of H_2 on Pd(100) is investigated using density functional theory and the full-potential linear augmented plane wave (FP-LAPW) method. Several dissociation pathways are…

mtrl-th · Physics 2009-10-28 Steffen Wilke , Matthias Scheffler

We compare the trends on the strength of electronic correlations across the different phases of elemental Pu focusing on its site and orbital dependence, using a combination of density functional theory (DFT) and dynamical mean field theory…

Strongly Correlated Electrons · Physics 2021-01-04 W. H. Brito , G. Kotliar

In this work, using theoretical calculations within the framework of the density functional theory, taking into account the dispersive VDW interaction, the processes of adsorption and interaction of a water molecule with a TiO2 surface in…