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4 papers · 2 filters
D- shallow donor near a semiconductor-metal and a semiconductor-dielectric interface
Y. L. Hao, A. P. Djotyan, A. A. Avetisyan +1
The ground state energy and the extend of the wavefunction of a negatively charged donor (D-) located near a semiconductor-metal or a semiconductor-dielectric interface is obtained…
Topological confinement in graphene bilayer quantum rings
L. J. P. Xavier, J. M. Pereira, Andrey Chaves +2
We demonstrate the existence of localized electron and hole states in a ring-shaped potential kink in biased bilayer graphene. Within the continuum description, we show that for sh…
Stacking Order dependent Electric Field tuning of the Band Gap in Graphene Multilayers
A. A. Avetisyan, B. Partoens, F. M. Peeters
The effect of different stacking order of graphene multilayers on the electric field induced band gap is investigated. We considered a positively charged top and a negatively charg…
Simplified model for the energy levels of quantum rings in single layer and bilayer graphene
M. Zarenia, J. Milton Pereira, A. Chaves +2
Within a minimal model, we present analytical expressions for the eigenstates and eigenvalues of carriers confined in quantum rings in monolayer and bilayer graphene. The calculati…