Floating of critical states and the QH to insulator transition

Details Floating of critical states and the QH to insulator transition Floating of critical states and the QH to insulator transition

2001-02-27

arxiv.org/abs/cond-mat/0102486v1

Physica B 298/1-4, 52 (2001)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

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

Scientific paper

10.1016/S0921-4526(01)00254-X

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.

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