Electron Interactions and Transport Between Coupled Quantum Hall Edges

Details Electron Interactions and Transport Between Coupled Quantum Hall Edges Electron Interactions and Transport Between Coupled Quantum Hall Edges

2004-08-12

arxiv.org/abs/cond-mat/0408272v2

PRL 94, 086804 (2005)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 2 figures, typos corrected, Ref. 17 added, minor changes made for publication

Scientific paper

10.1103/PhysRevLett.94.086804

We examine the effects of electron-electron interactions on transport between edge states in a multilayer integer quantum Hall system. The edge states of such a system, coupled by interlayer tunneling, form a two-dimensional, chiral metal at the sample surface. We calculate the temperature-dependent conductivity and the amplitude of conductance fluctuations in this chiral metal, treating Coulomb interactions and disorder exactly in the weak-tunneling limit. We find that the conductivity increases with increasing temperature, as observed in recent experiments, and we show that the correlation length characterising conductance fluctuations varies inversely with temperature.

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