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- S. Bednarek, Bart lomiej Szafran, Richard Dudek, Krzysztof Lis
- Physical review letters
- 2008

We show that quantum dots and quantum wires are formed underneath metal electrodes deposited on a planar semiconductor heterostructure containing a quantum well. The confinement is due to theâ€¦ (More)

- E N Osika, Bart lomiej Szafran
- Journal of physics. Condensed matter : anâ€¦
- 2015

We develop an effective tight-binding Hamiltonian for spin-orbit (SO) interaction in bent carbon nanotubes (CNT) for the electrons forming the Ï€ bonds between the nearest neighbor atoms. We accountâ€¦ (More)

Electrostatic~gated! quantum dots are studied by computational methods. Electronic properties of the electrostatic quantum dots are determined by the confinement potential, which is created byâ€¦ (More)

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 nonperfect alignment. We showâ€¦ (More)

- S. Bednarek, Bart lomiej Szafran
- Physical review letters
- 2008

A design for a quantum gate performing transformations of a single electron spin is presented. The spin rotations are performed by the electron going around the closed loops in a gated semiconductorâ€¦ (More)

Binding energies of negative sXâˆ’d and positive trionssX+d in quantum wires are studied for strong quantum confinement of carriers which results in a numerical exactly solvable model. The relativeâ€¦ (More)

Few-electron systems confined in two-dimensional parabolic quantum dots at high magnetic fields are studied by the Hartree-Fock (HF) and exact diagonalization methods. A generalized multicenterâ€¦ (More)

We show that the order of energies of negative (X ) and positive (XÃ¾) trions in quantum wires is determined by the relative electron and hole lateral confinements. For equal electron and holeâ€¦ (More)

- Bart lomiej Szafran, Dariusz Zebrowski, Alina MreÅ„ca-KolasiÅ„ska
- Scientific Reports
- 2018

We study electrostatic quantum dot confinement for charge carriers in silicene. The confinement is formed by vertical electric field surrounding the quantum dot area. The resulting energy gap in theâ€¦ (More)

- ElÅ¼bieta Wach, Dariusz Zebrowski, Bart lomiej Szafran
- Journal of physics. Condensed matter : anâ€¦
- 2013

We perform a numerical simulation of the mapping of charge confined in quantum dots by the scanning probe technique. We solve the few-electron SchrÃ¶dinger equation with the exact diagonalizationâ€¦ (More)