Abstract
We consider models for the plateau transition in the integer quantum Hall effect. Starting from the network model, we construct a mapping to the Dirac Hamiltonian in two dimensions. In the general case, the Dirac Hamiltonian has randomness in the mass, the scalar potential, and the vector potential. Separately, we show that the network model can also be associated with a nearest-neighbor, tight-binding Hamiltonian. © 1996 The American Physical Society.
- Received 19 April 1996
DOI:https://doi.org/10.1103/PhysRevB.54.8708
©1996 American Physical Society