Transition from Integer Quantum Hall State to Insulator

Details Transition from Integer Quantum Hall State to Insulator Transition from Integer Quantum Hall State to Insulator

1995-12-04

arxiv.org/abs/cond-mat/9512015v1

Physics

Condensed Matter

4 pages, uuencoded postscript file for entire paper, also available at http://rainbow.uchicago.edu/~ldz/paper

Scientific paper

10.1103/PhysRevB.54.4966

We study disorder induced transition between quantum Hall states and insulator state in a {\it lattice} model. We find the positions of the extended states do not change as disorder strength is varied. As a consequence, there are direct transitions from all Landau level quantum Hall states to insulator states, in contrast to the global phase diagram from early studies based on continuous models. We also provide the microscopic understanding of the transition in terms of the topological properties of the system.

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