103 citations · 323 across the 23 of their papers we have counts for
23 papers
Spectral analysis, chiral disorder and topological edge states manifestation in open non-Hermitian Su-Schrieffer-Heeger chains
B. Ostahie, A. Aldea
We investigate topological and disorder effects in non-Hermitian systems with chiral symmetry. The system under consideration consists in a finite Su-Schrieffer-Heeger chain to whi…
Nonequilibrium quasistationary spin disordered state in the Kitaev-Heisenberg magnet -RuCl
R. B. Versteeg, A. Chiocchetta, F. Sekiguchi +9
Excitation by light pulses enables the manipulation of phases of quantum condensed matter. Here, we photoexcite high-energy holon-doublon pairs as a way to alter the magnetic free…
Edge states mechanism for the anomalous quantum Hall effect in diatomic square lattice
B. Ostahie, M. Nita, A. Aldea
The understanding of the Chern insulator and anomalous quantum Hall effect (AQHE) in terms of chiral edge states in confined systems is the first aim of the paper. The model we use…
Non-Hermitian approach of edge states and quantum transport in a magnetic field
B. Ostahie, M. Nita, A. Aldea
We develop a manifest non-Hermitian approach of spectral and transport properties of two- dimensional mesoscopic systems in strong magnetic field. The finite system to which severa…
Phosphorene confined systems in magnetic field, quantum transport, and superradiance in the quasi-flat band
B. Ostahie, A. Aldea
Spectral and transport properties of electrons in confined phosphorene systems are investigated in a five hopping parameter tight-binding model, using analytical and numerical tech…
Electrical manipulation of the edge states in graphene and the effect on the quantum Hall transport
B. Ostahie, M. Nita, A. Aldea
We investigate new properties of the Dirac electrons in the finite graphene sample under perpendicular magnetic field that emerge when an in-plane electric bias is also applied. Th…