Edge reconstruction in the ν=2/3 fractional quantum hall state

Jianhui Wang, Yigal Meir, Yuval Gefen

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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.

Original languageEnglish
Article number246803
JournalPhysical Review Letters
Issue number24
StatePublished - 9 Dec 2013


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