A5048216173- Surface and Thin Film Phenomena
- Theoretical and Computational Physics
- Advanced Chemical Physics Studies
- Advanced Materials Characterization Techniques
- Rare-earth and actinide compounds
- nanoparticles nucleation surface interactions
- Chemical and Physical Properties of Materials
- Stochastic processes and statistical mechanics
- Ion-surface interactions and analysis
- Thermodynamic and Structural Properties of Metals and Alloys
- Force Microscopy Techniques and Applications
- Polish Historical and Cultural Studies
- Language and Culture
- Historical and Cultural Studies of Poland
- Magnetic properties of thin films
- Random lasers and scattering media
- Cold Atom Physics and Bose-Einstein Condensates
- Iron-based superconductors research
- Quasicrystal Structures and Properties
- Heat and Mass Transfer in Porous Media
- Advanced Condensed Matter Physics
- Nuclear Materials and Properties
- Lattice Boltzmann Simulation Studies
- Semiconductor materials and devices
- Material Dynamics and Properties
University of Wrocław
1996-2017
We consider a lattice-gas model with an infinite pairwise nonconvex total interaction of the form V(r)=J/${\mathit{r}}^{2}$+Acos(2${\mathit{k}}_{\mathit{F}}$ar+\ensuremath{\varphi})/r. This one-dimensional might account, for example, adsorption alkaline elements on W(112) and Mo(112). The first term describes effective dipole-dipole interaction, while other one indirect (oscillatory) interaction; J, A, \ensuremath{\varphi} are parameters, whereas ${\mathit{k}}_{\mathit{F}}$ stands wave...
We report a theoretical study of image-potential states at (001) surface Ag, done with the help simple tight-binding model having an electronic band finite width. The wave function associated these is calculated center two-dimensional (2D) Brillouin zone. energy dispersion studied along symmetry directions this 2D zone and deviation from its usual parabolic form discussed. Inside tunnel junction Ag(001)/vacuum/Ag(001) energies were shown to depend on width vacuum slab. Finally, we how vary...
The temperature-dependent phase diagrams of a multiaxial cubic magnet model with both exchange and crystal-field anisotropy are discussed in the molecular-field approximation. Only case spin S=1 is considered. It shown that tricritical points always exist for strong anisotropy, D. There another line negative D K/J<or= square root 2. examples possible presented compared results Khajehpour co-workers (1975) uniaxial model.
Using a mean-field approximation we describe the early stages of growth Ge on Si(111) mediated by Pb surfactant. A set rate equations is constructed for time evolution number clusters given size. The atoms are deposited onto surface at constant flux rate, giving rise to monomer population. rates and dissociation then calculated assuming that energy ${E}_{\mathit{diss}}=[\overline{n}(s)\ensuremath{-}\ensuremath{\lambda}]{E}_{\mathit{br}}+{E}_{d}$, where ${E}_{\mathit{br}}$ required break one...
The one-dimensional stochastic Lorentz gas is studied in continuous space and the cellular automata approach. It shown that method leads to extra oscillations of velocity autocorrelation. arise as a result multiple reflections. differences between models become unimportant when product concentration scatterers probability reflection small.
We study diffusion in the Lorentz gas of noninteracting charged particles on a triangular lattice transverse magnetic field. The percolation threshold appears at scatterers concentration ${c}_{0}=0.2155.$ ${c}_{0}$ is anomalous with same exponent ${d}_{w}=2.874$ as one found for universality class standard two-dimensional percolation. presence logarithmic corrections to ${t}^{\ensuremath{-}2}$ algebraic tail velocity autocorrelation function demonstrated special case close 1, by making use...
The authors investigate the properties of a model in which particle moves on square lattice with fraction sites randomly occupied by stationary scatterers. Between two successive collisions scatterers, performs random walk. velocity autocorrelation function, measured computer moment propagation method, has an algebraic long-time tail although for some parameters it decays very slowly at large time. They discuss diffusion process such calculating coefficient Boltzmann and effective medium...