# 6. Chalker-Coddington model for the Quantum Hall effect

#### Presentations » 6. Chalker-Coddington model for the Quantum Hall effect

**Taken by Krzysztof Biedron**

The Quantum Hall effect manifests itself by peaks (in the longitudinal direction) and plateaus (in the transverse direction) of the conductance of a 2d electron gas exposed to a perpendicular magnetic field. The Chalker-Coddingtion model is a simple model describing the transition between plateaus of the Quantum Hall effect. The attached papers discuss the properties of this model and a controversy on its critical exponent.

The first paper is a general review (which will be presented in presentation 5), where the model is introduced in section 3. The state of the art is discussed in the Phys. Rev. B paper and in the oral presentation attached.