Optical Anomalies of the Two-Dimensional Electron Gas in the Extreme Magnetic Quantum Limit
- 1 August 1988
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 61 (5), 605-608
- https://doi.org/10.1103/physrevlett.61.605
Abstract
Band-gap optical recombination from the two-dimensional electron gas in GaAs-(Al,Ga)As quantum wells was measured in the regime of the fractional quantum Hall effect. New intrinsic emission lines emerge at the Landau-level filling factor and at . The anomaly near is associated with changes in population of the lowest spin-split Landau level. The spectral doublet observed near has a striking temperature dependence below K similar to the magnetoresistance associated with the many-body quantum fluid.
Keywords
This publication has 25 references indexed in Scilit:
- Magneto-optics of the fractional quantum hall effectSurface Science, 1988
- Optical measurements of Landau level density of states and coulomb gaps under FQHE in Si MOSFETSurface Science, 1988
- Fiber optics for Raman scattering at low temperatures and high-magnetic fieldsReview of Scientific Instruments, 1987
- Tuning of the valence-band structure of GaAs quantum wells by uniaxial stressPhysical Review Letters, 1987
- Fiber optics for low-temperature spectroscopy: Applications to photoluminescence from (Cd, Mn)TeReview of Scientific Instruments, 1985
- Higher-Order States in the Multiple-Series, Fractional, Quantum Hall EffectPhysical Review Letters, 1984
- Optical processes of 2D electron plasma in GaAs-(AlGa)As heterostructuresSolid State Communications, 1984
- Anomalous Quantum Hall Effect: An Incompressible Quantum Fluid with Fractionally Charged ExcitationsPhysical Review Letters, 1983
- Two-Dimensional Magnetotransport in the Extreme Quantum LimitPhysical Review Letters, 1982
- Intrinsic radiative recombination from quantum states in GaAs-AℓxGa1−xAs multi-quantum well structuresSolid State Communications, 1981