Please use this identifier to cite or link to this item: http://hdl.handle.net/1783.1/2347

A unified picture of the scaling and non-scaling behavior in quantum hall plateau transitions

Authors Wang, X.R.
Xiong, G.
Niu, Q.
Issue Date 2005
Source AIP Conference Proceedings, v. 772, 2005, p. 539-540
Summary A unified picture of the scaling and non-scaling behavior in quantum Hall plateau transitions is proposed. We show that the interband mixing of states with opposite chiralities and the degrees of the inter-Landau-band overlap are the key ingredients to the problem. We find that the mixing of states with opposite chiralities tends to delocalize electronic states, leading to the formation of extended-state band near the center of each Landau subband. However, this requires sufficient interband overlap to interlock the two sets of states. We find extended states in each Landau band evolve from its center to a narrow band around the center as the interband overlap increases. Thus the nature of a plateau transition changes from a continuous phase transition at a low interband overlap to a cross of a narrow metallic phase at a high interband overlap. © 2005 American Institute of Physics.
Subjects
ISSN 0094-243X
ISBN 0-7354-0257-4
Language English
Format Conference paper
Access View full-text via DOI
View full-text via Scopus
View full-text via Web of Science
Find@HKUST
Files in this item:
File Description Size Format
H5132.pdf 169271 B Adobe PDF