Quantum-Hall to insulator transition

Abstract

The crossover from the quantum Hall regime to the Hall-insulator is investigated by varying the strength of the diagonal disorder in a 2d tight-binding model. The Hall and longitudinal conductivities and the behavior of the critical states are calculated numerically. We find that with increasing disorder the current carrying states close to the band center disappear first. Simultaneously, the quantized Hall conductivity drops monotonically to zero also from higher quantized values.

5 pages LaTeX2e, 5 ps-figures included. Proceedings SemiMag13, Nijmegen 1998; to appear in Physica B

References in corpus (1)

• New universality of metal-insulator transition in integer quantum Hall effect system

Cited by in corpus (7)

• Phase Diagram of Integer Quantum Hall Effect
• Levitation of Current Carrying States in the Lattice Model for the Integer Quantum Hall Effect
• Levitation of quantum Hall critical states in a lattice model with spatially correlated disorder
• Reflection Symmetry and Quantized Hall Resistivity near Quantum Hall Transition
• Metal-insulator transitions in anisotropic 2d systems
• Influence of Correlated Disorder Potentials on the Levitation of Current Carrying States in the Quantum Hall Effect
• Floating of critical states and the QH to insulator transition