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Effect of the boundary condition on the vortex patterns in mesoscopic three-dimensional superconductors - disk and sphere
Mauro M. Doria, Antonio R. de C. Romaguera, F. M. Peeters
The vortex state of mesoscopic three-dimensional superconductors is determined using a minimization procedure of the Ginzburg-Landau free energy. We obtain the vortex pattern for a…
Threefold onset of vortex loops in superconductors with a magnetic core
Mauro M. Doria, Antonio R. de C. Romaguera, M. V. Milošević +1
A magnetic inclusion inside a superconductor gives rise to a fascinating complex of {\it vortex loops}. Our calculations, done in the framework of the Ginzburg-Landau theory, revea…
Exciton spectra in vertical stacks of triple and quadruple quantum dots in an electric field
B. Szafran, E. Barczyk, F. M. Peeters +1
We study an electron-hole pair in a stack of multiple quantum dots in the presence of an external electric field using the configuration interaction approach. We find that the brig…
Adsorption of H2O, NH3, CO, NO2, and NO on graphene: A first-principles study
O. Leenaerts, B. Partoens, F. M. Peeters
Motivated by the recent realization of graphene sensors to detect individual gas molecules, we investigate the adsorption of H2O, NH3, CO, NO2, and NO on a graphene substrate using…
Rearrangement of the vortex lattice due to instabilities of vortex flow
D. Y. Vodolazov, F. M. Peeters
With increasing applied current we show that the moving vortex lattice changes its structure from a triangular one to a set of parallel vortex rows in a pinning free superconductor…
Optical properties of (In,Ga)As capped InAs quantum dots grown on [11k] substrates
V. Mlinar, F. M. Peeters
Using three-dimensional k.p calculation including strain and piezoelectricity, we showed that the size of the quantum dot (QD) in the growth direction determines the influence of t…
A three-dimensional model for artificial atoms and molecules: Influence of substrate orientation and magnetic field dependence
V. Mlinar, F. M. Peeters
A full three-dimensional model for the calculation of the electronic structure of semiconductor quantum dots (QD) and molecules (QDM) grown on high index surfaces and/or in the pre…
Graphene-based resonant-tunneling strucures
J. Milton Pereira, P. Vasilopoulos, F. M. Peeters
Resonant electronic transmission through graphene-based double barriers (wells) is studied as a function of the incident wave vector, the widths and heights (depths) of the barrier…
Enhanced Weiss oscillations in graphene
A. Matulis, F. M. Peeters
The magneto-conductivity of a single graphene layer where the electrons are described by the Dirac Hamiltonian weakly modulated by a periodic potential is calculated. It is shown t…