arXiv subjects

S. S. Kosolobov

Publications and source records attributed to S. S. Kosolobov.

2 recordsLinked to original sources

arXiv2020

Propagation of Strongly Hybridized Edge Modes in Plasmonic Waveguides

In our work we investigate the propagation of optical modes in nanoscale hybrid plasmonic waveguides. Frequency domain Maxwell equations based simulations are implemented to study properties of mixed modes in 3D. The results of our analysis are applied to design an advanced hybrid waveguide with useful characteristics. It is demonstrated here how to couple two edge plasmons with a waveguide mode to form a hybrid waveguide well tuned for applications in the field of electro-optical transistors (modulators). A mixed polarization state of edge plasmons allows them to couple with a horizontally polarized (TE) optical mode (which is not possible for usual surface plasmons) and open the way to polarization independent plasmonic modulators.

physics.optics↗

arXiv2019

Subsurface diffusion in crystals and effect of surface permeability on the atomic step motion

Atomic mechanism of the bulk and surface point defect generation and annihilation on surface sinks is considered theoretically on the base of the Burton, Cabrera and Frank model. We show that the creation and annihilation of self-interstitials and vacancies at crystal surfaces can be described by introducing a diffusive layer of the bulk point defects adsorbed just below the surface. The effect of the surface permeability on the atomic step rate advance is analyzed. We conclude that the surface permeability, as well as the supersaturation of point defects in both gas and bulk phases, control the dynamic of the crystal surface morphology.

cond-mat.mtrl-sci↗