Cascade of Quantum Phase Transitions in Tunnel-Coupled Edge States

Thumbnail Image

Date

Authors

Journal Title

Journal ISSN

Volume Title

Publisher

Abstract

Description

We report on the cascade of quantum phase transitions exhibited by tunnel-coupled edge states across a quantum Hall line junction. We identify a series of quantum critical points between successive strong and weak tunneling regimes in the zero-bias conductance. Scaling analysis shows that the conductance near the critical magnetic fields $B_{c}$ is a function of a single scaling argument $|B-B_{c}|T^{-κ}$, where the exponent $κ= 0.42$. This puzzling resemblance to a quantum Hall-insulator transition points to importance of interedge correlation between the coupled edge states.
4 pages, 3 figures

Keywords

Mesoscale and Nanoscale Physics

Citation

URI

http://salesiana.dossiersoluciones.com/handle/123456789/22596

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/cond-mat/0311022
 http://arxiv.org/abs/cond-mat/0311022
 Phy. Rev. Lett. 92, 056802 (2004)
 doi:10.1103/PhysRevLett.92.056802

Collections

arXiv