104 citations · 341 across the 11 of their papers we have counts for
8 papers · 1 filter
Time dependent electric transport in nodal-loop semimetals
Zoltán Okvátovity, László Oroszlány, Balázs Dóra
Close to the Fermi energy, nodal loop semimetals have a torus-shaped, strongly anisotropic Fermi surface which affects their transport properties. Here we investigate the non-equil…
Competition of trivial and topological phases in patterned graphene based heterostructures
Zoltán Tajkov, János Koltai, József Cserti +1
We explore the effect of mechanical strain on the electronic spectrum of patterned graphene based heterostructures. We focus on the competition of Kekulé-O type distortion favoring…
Poor man's topological quantum gate based on the Su-Schrieffer-Heeger model
Péter Boross, János K. Asbóth, Gábor Széchenyi +2
Topological properties of quantum systems could provide protection of information against environmental noise, and thereby drastically advance their potential in quantum informatio…
Exchange interactions from a nonorthogonal basis set: from bulk ferromagnets to the magnetism in low-dimensional graphene systems
László Oroszlány, Jaime Ferrer, András Deák +2
We present a computational method to determine the exchange constants in isotropic spin models. The method uses the Hamiltonian and overlap matrices computed from density functiona…
Exfoliation of single layer BiTeI flakes
Bálint Fülöp, Zoltán Tajkov, János Pető +9
Spin orbit interaction can be strongly boosted when a heavy element is embedded into an inversion asymmetric crystal field. A simple structure to realize this concept in a 2D cryst…
A Short Course on Topological Insulators: Band-structure topology and edge states in one and two dimensions
János K. Asbóth, László Oroszlány, András Pályi
This course-based primer provides newcomers to the field with a concise introduction to some of the core topics in the emerging field of topological band insulators in one and two…
Intraband electron focusing in bilayer graphene
Csaba G. Péterfalvi, László Oroszlány, Colin J. Lambert +1
We propose an implementation of a valley selective electronic Veselago lens in bilayer graphene. We demonstrate that in the presence of an appropriately oriented potential step, lo…
Effect of the band structure topology on the minimal conductivity for bilayer graphene with symmetry breaking
Gyula Dávid, Péter Rakyta, László Oroszlány +1
Using the Kubo formula we develop a general and simple expression for the minimal conductivity in systems described by a two by two Hamiltonian. As an application we derive an anal…