Edge Reconstruction in the ν=2/3 Fractional Quantum Hall State

Phys. Rev. Lett. 111, 246803 – Published 9 December 2013
Jianhui Wang, Yigal Meir, and Yuval Gefen


The edge structure of the ν=2/3 fractional quantum Hall state has been studied for several decades, but recent experiments, exhibiting upstream neutral mode(s), a plateau at a Hall conductance of 13(e2/h) through a quantum point contact, and a crossover of the effective charge, from e/3 at high temperature to 2e/3 at low temperature, could not be explained by a single theory. Here we develop such a theory, based on edge reconstruction due to a confining potential with finite slope, that admits an additional ν=1/3 incompressible strip near the edge. Renormalization group analysis of the effective edge theory due to disorder and interactions explains the experimental observations.

DOI: http://dx.doi.org/10.1103/PhysRevLett.111.246803

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  • Received 4 June 2013
  • Published 9 December 2013

© 2013 American Physical Society

Authors & Affiliations

Jianhui Wang1,2, Yigal Meir1,3, and Yuval Gefen2

  • 1Department of Physics, Ben-Gurion University of the Negev, Beer Sheva 84105, Israel
  • 2Department of Condensed Matter Physics, Weizmann Institute of Science, Rehovot 76100, Israel
  • 3Ilse Katz Institute for Nanoscale Science and Technology, Ben-Gurion University of the Negev, Beer Sheva 84105, Israel

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