Binding Transition in Quantum Hall Edge States

Details Binding Transition in Quantum Hall Edge States Binding Transition in Quantum Hall Edge States

1999-03-18

arxiv.org/abs/cond-mat/9903275v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, RevTeX, 1 figure

Scientific paper

10.1103/PhysRevLett.83.5563

We study a class of Abelian quantum Hall (QH) states which are topologically unstable (T-unstable). We find that the T-unstable QH states can have a phase transition on the edge which causes a binding between electrons and reduces the number of gapless edge branches. After the binding transition, the single-electron tunneling into the edge gains a finite energy gap, and only certain multi-electron co-tunneling (such as three-electron co-tunneling for $\nu=9/5$ edges) can be gapless. Similar phenomenon also appear for edge state on the boundary between certain QH states. For example edge on the boundary between $\nu=2$ and $\nu=1/5$ states only allow three-electron co-tunneling at low energies after the binding transition.

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