138 citations · 355 across the 12 of their papers we have counts for
12 papers
Electric transport through circular graphene quantum dots: Presence of disorder
G. Pal, W. Apel, L. Schweitzer
The electronic states of an electrostatically confined cylindrical graphene quantum dot and the electric transport through this device are studied theoretically within the continuu…
Narrow depression in the density of states at the Dirac point in disordered graphene
L. Schweitzer
The electronic properties of non-interacting particles moving on a two-dimensional bricklayer lattice are investigated numerically. In particular, the influence of disorder in form…
Disorder-driven splitting of the conductance peak at the Dirac point in graphene
L. Schweitzer, P. Markos
The electronic properties of a bricklayer model, which shares the same topology as the hexagonal lattice of graphene, are investigated numerically. We study the influence of random…
Levitation of quantum Hall critical states in a lattice model with spatially correlated disorder
Th. Koschny, L. Schweitzer
The fate of the current carrying states of a quantum Hall system is considered in the situation when the disorder strength is increased and the transition from the quantum Hall liq…
Floating of critical states and the QH to insulator transition
H. Potempa, L. Schweitzer
The transition from the quantum Hall state to the insulator is considered for non-interacting electrons in a two-dimensional disordered lattice model with perpendicular magnetic fi…
Levitation of Current Carrying States in the Lattice Model for the Integer Quantum Hall Effect
Th. Koschny, H. Potempa, L. Schweitzer
The disorder driven quantum Hall to insulator transition is investigated for a two-dimensional lattice model. The Hall conductivity and the localization length are calculated numer…
Critical level statistics of a quantum Hall system with Dirichlet boundary conditions
H. Potempa, L. Schweitzer
We investigate numerically the influence of Dirichlet boundary conditions on the nearest neighbor level spacing distribution of a two-dimensional disordered tight-binding mo…
Influence of boundary conditions on level statistics and eigenstates at the metal insulator transition
L. Schweitzer, H. Potempa
We investigate the influence of the boundary conditions on the scale invariant critical level statistics at the metal insulator transition of disordered three-dimensional orthogona…
Dependence of critical level statistics on the sample shape
H. Potempa, L. Schweitzer
The level-spacing distribution of consecutive energy eigenvalues is calculated numerically at the metal insulator transition for 3d systems with different cuboid shapes. It is foun…
Scaling of level-statistics and critical exponent of disordered two-dimensional symplectic systems
L. Schweitzer, I. Kh. Zharekeshev
The statistics of the energy eigenvalues at the metal-insulator-transition of a two-dimensional disordered system with spin-orbit interaction is investigated numerically. The criti…
Crossover from critical orthogonal to critical unitary statistics at the Anderson transition
M. Batsch, L. Schweitzer, I. Kh. Zharekeshev +1
We report a novel scale-independent, Aharonov-Bohm flux controlled crossover from critical orthogonal to critical unitary statistics at the disorder induced metal insulator transit…
Relation between the Correlation Dimensions of Multifractal Wavefunctions and Spectral Measures in Integer Quantum Hall Systems
B. Huckestein, L. Schweitzer
We study the time evolution of wavepackets of non-interacting electrons in a two-dimensional disordered system in strong magnetic field. For wavepackets built from states near the…