Chiral Surface States in the Bulk Quantum Hall Effect

Details Chiral Surface States in the Bulk Quantum Hall Effect Chiral Surface States in the Bulk Quantum Hall Effect

1995-10-16

arxiv.org/abs/cond-mat/9510089v1

Physics

Condensed Matter

4 pages, RevTeX 3.0, with two encapsulated postscript figures, which can be automatically included in-text if desired. The com

Scientific paper

10.1103/PhysRevLett.76.2782

In layered samples which exhibit a bulk quantum Hall effect (QHE), a two-dimensional (2d) surface ``sheath" of gapless excitations is expected. These excitations comprise a novel 2d chiral quantum liquid which should dominate the low temperature transport along the field (z-axis). For the integer QHE, we show that localization effects are completely absent in the ``sheath", giving a metallic z-axis conductivity. For fractional filling $\nu =1/3$, the ``sheath" is a 2d non-Fermi liquid, with incoherent z-axis transport and $\sigma_{zz} \sim T^3$. Experimental implications for the Bechgaard salts are discussed.

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