50 citations · 229 across the 18 of their papers we have counts for
18 papers
Merging of the Dirac points in electronic artificial graphene
J. Feilhauer, W. Apel, L. Schweitzer
Theory predicts that graphene under uniaxial compressive strain in an armchair direction should undergo a topological phase transition from a semimetal into an insulator. Due to th…
Disordered two-dimensional electron systems with chiral symmetry
P. Markos, L. Schweitzer
We review the results of our recent numerical investigations on the electronic properties of disordered two dimensional systems with chiral unitary, chiral orthogonal, and chiral s…
Landau level splitting due to graphene superlattices
G. Pal, W. Apel, L. Schweitzer
The Landau level spectrum of graphene superlattices is studied using a tight-binding approach. We consider non-interacting particles moving on a hexagonal lattice with an additiona…
Energy gap in graphene nanoribbons with structured external electric potentials
W. Apel, G. Pal, L. Schweitzer
The electronic properties of graphene zig-zag nanoribbons with electrostatic potentials along the edges are investigated. Using the Dirac-fermion approach, we calculate the energy…
On the role of the symmetry parameter in the strongly localized regime
P. Markos, L. Schweitzer
The generalization of the Dorokhov-Mello-Pereyra-Kumar equation for the description of transport in strongly disordered systems replaces the symmetry parameter by a new paramet…
Critical conductance of the chiral 2d random flux model
L. Schweitzer, P. Markoš
The two-terminal conductance of a random flux model defined on a square lattice is investigated numerically at the band center using a transfer matrix method. Due to the chiral sym…