105 citations · 148 across the 5 of their papers we have counts for
5 papers
Anderson localization in a two-dimensional random gap model
A. Hill, K. Ziegler
We study the properties of the spinor wavefunction in a strongly disordered environment on a two-dimensional lattice. By employing a transfer-matrix calculation we find that there…
Scaling behavior of disordered lattice fermions in two dimensions
A. Hill, K. Ziegler
We propose a lattice model for Dirac fermions which allows us to break the degeneracy of the node structure. In the presence of a random gap we analyze the scaling behavior of the…
Valley symmetry breaking and gap tuning in graphene by spin doping
Antonio Hill, Andreas Sinner, Klaus Ziegler
We study graphene with an adsorbed spin texture, where the localized spins create a periodic magnetic flux. The latter produces gaps in the graphene spectrum and breaks the valley…
Optical Hall conductivity of systems with gapped spectral nodes
A. Hill, A. Sinner, K. Ziegler
We calculate the optical Hall conductivity within the Kubo formalism for systems with gapped spectral nodes, where the latter have a power-law dispersion with exponent n. The optic…
Dielectric function and plasmons in graphene
A. Hill, S. A. Mikhailov, K. Ziegler
The electromagnetic response of graphene, expressed by the dielectric function, and the spectrum of collective excitations are studied as a function of wave vector and frequency. O…