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- Leibniz University HannoverDE186 papers
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- GSI Helmholtz Centre for Heavy Ion ResearchDE43 papers
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8 papers · 1 filter
Electron conduction within Landau level tails of medium-mobility GaAs / AlGaAs heterostructures
P. Svoboda, G. Nachtwei, C. Breitlow +2
The temperature dependence of both components of the resistivity tensor and has been studied at T 4.2 K within IQHE plateaux around filli…
Exact density of states of a two-dimensional electron gas in a strong magnetic field and a long-range correlated random potential
Lothar Spies, Walter Apel, Bernhard Kramer
We derive an exact result for the averaged Feynman propagator and the corresponding density of states of an electron in two dimensions in a perpendicular homogeneous magnetic field…
Hopf term and the effective Lagrangian for the Skyrmions in a two-dimensional electron gas at small g-factor
W. Apel, Yu. A. Bychkov
We study interacting electrons in two dimensions moving in the lowest Landau level under the condition that the Zeeman energy is much smaller than the Coulomb energy and the fillin…
Level statistics in the quantum Hall regime
M. Batsch, L. Schweitzer
The statistical properties of energy eigenvalues in the critical regime of the lowest Landau band are investigated. The nearest neighbour level spacing distribution and the…
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…
Mean-field limit of the random flux model
B. Kramer, D. Belitz, M. Batsch
The problem of non--interacting electrons on a square lattice subject to a random magnetic flux is mapped onto a one--dimensional model with infinitely many orbitals per site. Link…