Nonequilibrium edge-state transport resolved by far-infrared microscopy
- 1 February 1993
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 70 (5) , 651-653
- https://doi.org/10.1103/physrevlett.70.651
Abstract
Subwavelength focusing of far-infrared light (λ=392 μm) is introduced to resolve spatially the photoconductivity of a two-dimensional electron gas. An increased cyclotron resonance amplitude is observed at one of the sample edges which proves that it is at the edge where states with nonequilibrium population can exist.Keywords
This publication has 14 references indexed in Scilit:
- Novel far-infrared-photoconductor based on photon-induced interedge channel scatteringApplied Physics Letters, 1991
- Edge channels and the role of contacts in the quantum Hall regimePhysical Review B, 1990
- New resistivity for high-mobility quantum Hall conductorsPhysical Review Letters, 1990
- Selective equilibration among the current-carrying states in the quantum Hall regimePhysical Review Letters, 1990
- Violation of the integral quantum Hall effect: Influence of backscattering and the role of voltage contactsPhysical Review B, 1989
- Influence of Edge Currents on Shubnikov-Dehaas Oscillations in Two-Dimensional SystemsEurophysics Letters, 1989
- Anomalous integer quantum Hall effect in the ballistic regime with quantum point contactsPhysical Review Letters, 1989
- Equipotential distribution in the quantum Hall effectPhysical Review B, 1985
- Distribution of the quantized Hall potential in GaAs-As heterostructuresPhysical Review B, 1985
- Hall potential distribution in quantum Hall experimentsJournal of Physics C: Solid State Physics, 1985