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5 papers · 2 filters
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…
Exciton and negative trion dissociation by an external electric field in vertically coupled quantum dots
B. Szafran, T. Chwiej, F. M. Peeters +3
We study the Stark effect for an exciton confined in a pair of vertically coupled quantum dots. A single-band approximation for the hole and a parabolic lateral confinement potenti…
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…