190 citations · 538 across the 5 of their papers we have counts for
10 papers · 1 filter
Few-electron physics in a nanotube quantum dot with spin-orbit coupling
Bernhard Wunsch
We study the few-electron eigenspectrum of a nanotube quantum dot with spin-orbit coupling. The two-electron phase diagram as a function of the length of the dot and the applied pa…
Dirac-point engineering and topological phase transitions in honeycomb optical lattices
B. Wunsch, F. Guinea, F. Sols
We study the electronic structure and the phase diagram of non-interacting fermions confined to hexagonal optical lattices. In the first part, we compare the properties of Dirac po…
Electron-electron interaction and charging effects in graphene quantum dots
B. Wunsch, T. Stauber, F. Guinea
We analyze charging effects in graphene quantum dots. Using a simple model, we show that, when the Fermi level is far from the neutrality point, charging effects lead to a shift in…
Pseudo-diffusive magnetotransport in graphene
Elsa Prada, Pablo San-Jose, Bernhard Wunsch +1
Transport properties through wide and short ballistic graphene junctions are studied in the presence of arbitrary dopings and magnetic fields. No dependence on the magnetic field i…
Dynamical polarization of graphene at finite doping
B. Wunsch, T. Stauber, F. Sols +1
The polarization of graphene is calculated exactly within the random phase approximation for arbitrary frequency, wave vector, and doping. At finite doping, the static susceptibili…
Probing level renormalization by sequential transport through double quantum dots
Bernhard Wunsch, Matthias Braun, Jürgen König +1
We study electron transport through double quantum dots in series. The tunnel coupling of the discrete dot levels to external leads causes a shift of their energy. This energy reno…