108 citations · 1.1k across the 25 of their papers we have counts for
18 papers · 1 filter
Confined electron states in two-dimensional HgTe in magnetic field: Quantum-dot versus quantum-ring behavior
Dušan B. Topalović, Vladimir V. Arsoski, Milan Ž. Tadić +1
We investigate the electron states and optical absorption in square- and hexagonal-shaped two-dimensional (2D) HgTe quantum dots and quantum rings in the presence of a perpendicula…
Excitons and trions in monolayer transition metal dichalcogenides: A comparative study between the multiband model and the quadratic single-band model
M. Van der Donck, M. Zarenia, F. M. Peeters
The electronic and structural properties of excitons and trions in monolayer transition metal dichalcogenides are investigated using both a multiband and a single-band model. In th…
Spin- and valley-dependent transport through arrays of ferromagnetic silicene junctions
N. Missault, P. Vasilopoulos, V. Vargiamidis +2
We study ballistic transport of Dirac fermions in silicene through arrays of barriers, of width , in the presence of an exchange field and a tunable potential of height …
Spin and valley polarization of plasmons in silicene due to external fields
B. Van Duppen, P. Vasilopoulos, F. M. Peeters
The electronic properties of the novel two dimensional (2D) material silicene are strongly influenced by the application of a perpendicular electric field and of an exchange…
Electron-electron interactions in bilayer graphene quantum dots
M. Zarenia, B. Partoens, T. Chakraborty +1
A parabolic quantum dot (QD) as realized by biasing nanostructured gates on bilayer graphene is investigated in the presence of electron-electron interaction. The energy spectrum a…
Electronic states in a graphene flake strained by a Gaussian bump
D. Moldovan, M. Ramezani Masir, F. M. Peeters
The effect of strain in graphene is usually modeled by a pseudo-magnetic vector potential which is, however, derived in the limit of small strain. In realistic cases deviations are…
Snake states in graphene quantum dots in the presence of a p-n junction
M. Zarenia, J. M. Pereira, F. M. Peeters +1
We investigate the magnetic interface states of graphene quantum dots that contain p-n junctions. Within a tight-binding approach, we consider rectangular quantum dots in the prese…
Electron-phonon bound states in graphene in a perpendicular magnetic field
J. Zhu, S. M. Badalyan, F. Peeters
The spectrum of electron-phonon complexes in a monolayer graphene is investigated in the presence of a perpendicular quantizing magnetic field. Despite the small electron-phonon co…
Plasmon and dielectric background inhomogeneity enhancement of Coulomb drag in graphene double-layer structures
S. M. Badalyan, F. M. Peeters
The drag of massless fermions in graphene double-layer structures is investigated in a wide rage of temperatures and inter-layer separations. We show that the inhomogeneity of the…
Effect of nonhomogenous dielectric background on the plasmon modes in graphene double-layer structures at finite temperatures
S. M. Badalyan, F. M. Peeters
We have calculated the plasmon modes in graphene double layer structures at finite temperatures, taking into account the inhomogeneity of the dielectric background of the system. T…
Scattering of Dirac electrons by circular mass barriers: valley filter and resonant scattering
M. Ramezani Masir, A. Matulis, F. M. Peeters
The scattering of two-dimensional (2D) massless Dirac electrons is investigated in the presence of a random array of circular mass barriers. The inverse momentum relaxation time an…
Chiral states in bilayer graphene: magnetic field dependence and gap opening
M. Zarenia, J. M. Pereira, G. A. Farias +1
At the interface of electrostatic potential kink profiles one dimensional chiral states are found in bilayer graphene (BLG). Such structures can be created by applying an asymmetri…
Landau levels in asymmetric graphene trilayers
J. M. Pereira, S. H. R. Sena, F. M. Peeters +1
The electronic spectrum of three coupled graphene layers (graphene trilayers) is investigated in the presence of an external magnetic field. We obtain analytical expressions for th…
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…
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…
Magnetic Kronig-Penney model for Dirac electrons in single-layer graphene
M. Ramezani Masir, P. Vasilopoulos, F. M. Peeters
The properties of Dirac electrons in a magnetic superlattice (SL) on graphene consisting of very high and thin (delta-function) barriers are investigated. We obtain the energy spec…
Confined magnetic guiding orbit states
J. Reijniers, A. Matulis, K. Chang +2
We show how snake-orbit states which run along a magnetic edge can be confined electrically. We consider a two-dimensional electron gas (2DEG) confined into a quantum wire, subject…