Edge states in the fractional quantum Hall effect
- 5 August 1991
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 67 (6) , 749-752
- https://doi.org/10.1103/physrevlett.67.749
Abstract
We have studied nonlocal electrical transport over macroscopic distances in the regime of the fractional quantum Hall effect (FQHE). Experiments clearly demonstrate dissipationless edge-state conduction associated with the FQHE. Surprisingly, our data imply that there is no edge-state conduction near filling factor ν=1/2 and on the low-ν side of the ν=1 QHE state, while edge-state conduction is observed near ν=3/2 and on the high-ν side of the ν=1 QHE state. We also observe that the electron-hole symmetry is broken for the edge states in a confined geometry.Keywords
This publication has 28 references indexed in Scilit:
- Quantized Multichannel Magnetotransport through a Barrier in Two DimensionsPhysical Review Letters, 1988
- Absence of backscattering in the quantum Hall effect in multiprobe conductorsPhysical Review B, 1988
- Quantum Hall effect in quasi one-dimensional systems: Resistance fluctuations and breakdownPhysical Review Letters, 1988
- Evidence for edge currents in the integral quantum Hall effectPhysical Review Letters, 1987
- Observation of Size Effect in the Quantum Hall RegimePhysical Review Letters, 1985
- Quantized Hall effect and edge currentsPhysical Review B, 1984
- Localization, percolation, and the quantum Hall effectPhysical Review B, 1983
- Quantized Hall conductance, current-carrying edge states, and the existence of extended states in a two-dimensional disordered potentialPhysical Review B, 1982
- Quantized Hall conductivity in two dimensionsPhysical Review B, 1981
- New Method for High-Accuracy Determination of the Fine-Structure Constant Based on Quantized Hall ResistancePhysical Review Letters, 1980