Floating of critical states and the QH to insulator transition

Abstract

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 field. Using correlated random disorder potentials the floating up of the critical states can be observed in a similar way as in the continuum model. Thus, the peculiar behaviour of the lattice models reported previously originates in the special choice of uncorrelated random disorder potentials.

4 pages incl. 4 eps-figures. Proceedings of SemiMag2000, Matsue, Japan. To be published in Physica B

Cited by in corpus (3)

• Magnetic Response Functions in Landau Levels
• Levitation of quantum Hall critical states in a lattice model with spatially correlated disorder
• Influence of Correlated Disorder Potentials on the Levitation of Current Carrying States in the Quantum Hall Effect