Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
2000-06-30
Nucl.Phys. B594 (2001) 713-746
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
RevTeX, 2 eps figs included, 35p., for a summary see http://xxx.lanl.gov/abs/cond-mat/0006432
Scientific paper
10.1016/S0550-3213(00)00679-9
We study the fractional quantum Hall effect in three dimensional systems consisting of infinitely many stacked two dimensional electron gases placed in transverse magnetic fields. This limit introduces new features into the bulk physics such as quasiparticles with non-trivial internal structure, irrational braiding phases, and the necessity of a boundary hierarchy construction for interlayer correlated states. The bulk states host a family of surface phases obtained by hybridizing the edge states in each layer. We analyze the surface conduction in these phases by means of sum rule and renormalization group arguments and by explicit computations at weak tunneling in the presence of disorder. We find that in cases where the interlayer electron tunneling is not relevant in the clean limit, the surface phases are chiral semi-metals that conduct only in the presence of disorder or at finite temperature. We show that this class of problems which are naturally formulated as interacting bosonic theories can be fermionized by a general technique that could prove useful in the solution of such ``one and a half'' dimensional problems.
Naud J. D.
Pryadko Leonid P.
Sondhi Shivaji L.
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