Buscar
Mostrando ítems 1-3 de 3
Ab initio study of hydrogen chemisorption in nitrogen-doped carbon nanotubes
The electronic structure of single walled nitrogen-doped carbon nanotubes is calculated by first principles using density functional theory within the supercell approach with periodic boundary conditions. The effect of the ...
Laterally coupled circular quantum dots under applied electric field
The optical response of a system of two laterally coupled quantum dots with circular cross-sectional shape is investigated within the effective mass approximation, taking into account the effects of the change in the ...
Nonlinear optical response in a zincblende GaN cylindrical quantum dot with donor impurity center
We calculate the nonlinear optical absorption coefficient of a cylindrical zincblende GaN-based quantum dot. For this purpose, we consider Coulomb interactions between electrons and an impurity ionized donor atom. The ...