Correlated tunneling and the instability of the fractional quantum Hall edge

Details Correlated tunneling and the instability of the fractional quantum Hall edge Correlated tunneling and the instability of the fractional quantum Hall edge

2007-11-26

arxiv.org/abs/0711.3982v2

Phys. Rev. Lett. 100, 156802 (2008)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Published version

Scientific paper

10.1103/PhysRevLett.100.156802

We consider a class of interaction terms that describes correlated tunneling of composite fermions between effective Landau levels. Despite being generic and of similar strength to that of the usual density-density couplings, these terms are not included in the accepted theory of the edges of fractional quantum Hall systems. Here we show that they may lead to an instability of the edge towards a new reconstructed state with additional channels, and thereby demonstrate the incompleteness of the traditional edge theory.

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