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20032009
most citedDynamical polarization of graphene at finite doping

1.1k citations · 2.9k across the 13 of their papers we have counts for

collaborators

11 papers

cond-mat.mes-hall2009★ 39 cited

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…

cond-mat.mes-hall2008★ 190 cited

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…

cond-mat.str-el2008★ 54 cited

Interactions and magnetism in graphene boundary states

B. Wunsch, T. Stauber, F. Sols +1

We analyze interaction effects on boundary states of single layer graphene. Near a half filled band, both short and long-ranged interactions lead to a fully spin polarized configur…

cond-mat.mes-hall2007★ 89 cited

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…

cond-mat.mes-hall2006★ 56 cited

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…

cond-mat.mes-hall2006★ 1.1k cited

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…