41 citations · 57 across the 2 of their papers we have counts for
7 papers
Pinning of electron densities in quantum rings by defects: symmetry constraints and distribution of persistent currents
T. Chwiej, B. Szafran
We study the pinning of few-electron charge densities by weak perturbations to circular quantum ring potentials. We find that the pinning by weak defects is only allowed when the s…
Stark effect on the exciton spectra of vertically coupled quantum dots: horizontal field orientation and non-aligned dots
B. Szafran, F. M. Peeters, S. Bednarek
We study the effect of an electric-field on an electron-hole pair in an asymmetric system of vertically coupled self-assembled quantum dots taking into account their non-perfect al…
Dependence of the vortex structure in quantum dots on the range of the inter-electron interaction
T. Stopa, B. Szafran, M. B. Tavernier +1
The internal structure of a composite fermion is investigated for a two dimensional parabolic quantum dot containing three electrons. A Yukawa screened Coulomb interaction is assum…
Few-electron eigenstates of concentric double quantum rings
B. Szafran, F. M. Peeters
Few-electron eigenstates confined in coupled concentric double quantum rings are studied by the exact diagonalization technique. We show that the magnetic field suppresses the tunn…
Time dependent simulations of electron transport through a quantum ring: effect of the Lorentz force
B. Szafran, F. M. Peeters
The time dependent Schrödinger equation for an electron passing through a semiconductor quantum ring of nonzero width is solved in the presence of a perpendicular homogenous magnet…
Stability of negative and positive trions in quantum wires
B. Szafran, T. Chwiej, F. M. Peeters +2
Binding energies of negative () and positive trions () in quantum wires are studied for strong quantum confinement of carriers which results in a numerical exactly solvab…