39 citations · 258 across the 36 of their papers we have counts for
36 papers
Static and Ensemble-Dependent Thermodynamics of the Strain-Induced Parity Anomaly in Gapped Graphene
Ara Sedrakyan, Klaus Ziegler
A static deformation of graphene can act on its Dirac electrons as a valley-odd magnetic field. In sublattice-gapped graphene this field makes the two valleys add in the parity-odd…
Enhanced polariton interaction in the presence of disorder
Matthew Prest, Cassandra Imperato, Oleg L. Berman +2
We consider the interaction between exciton-polaritons in a semiconductor quantum well, embedded in a microcavity, in the presence of disorder. The disorder acts on the excitons in…
Topological phases of the Bogoliubov de Gennes Hamiltonian
Klaus Ziegler
We investigate a two-dimensional superconducting system with a smoothly and periodically varying order parameter. The order parameter is modulated along one direction while remaini…
Phonon mode splitting and phonon anomaly in multiband electron systems
Klaus Ziegler
We investigate the topological consequences of coupling chiral fermions to local, dispersionless phonons. This interaction induces a splitting of the phonon spectrum into three ban…
Analytic bulk-edge connection in circular-symmetric models
Klaus Ziegler
We propose a systematic analysis of the eigenfunctions of two-band systems in two dimensions with a circular edge. Our approach is based on an analytic continuation of the wavenumb…
Pairing transition in a double layer with interlayer Coulomb repulsion
Andreas Sinner, Yurii E. Lozovik, Klaus Ziegler
We study the effect of interlayer Coulomb interaction in an electronic double layer. Assuming that each of the layers consists of a bipartite lattice, a sufficiently strong interla…