Year: 2004
Type: article
Abstract: Using the Chalker-Coddington network model as a drastically simplified, but universal model of integer quantum Hall physics, we investigate the plateau-to-insulator transition at strong magnetic field by means of a real-space renormalization approach. Our results suggest that for a fully quantum coherent situation, the quantized Hall insulator with R H ≈ h / e 2 is observed up to R L ∼ 25 h / e 2 when studying the most probable value of the distribution function P ( R H ). Upon further increasing R L → ∞ , the Hall insulator with diverging Hall resistance R H ∝ R L κ is seen. The crossover between these two regimes depends on the precise nature of the averaging procedure.
Source: Europhysics Letters (EPL)
Authors: P Cain, R. A Römer
Institutions: Chemnitz University of Technology, University of Warwick
Language: English
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: bronze
OpenAlex ID: W2073010306