Abstract
The density of states of two-dimensional electron systems in GaAs/AlGaAs single-layer and multilayer heterostructures has been determined through measurements of the high-field magnetization. Our results reveal a substantial density of states between Landau levels, even in high-mobility single quantum wells. There is no existing theoretical explanation for this anomaly.
- Received 28 May 1985
DOI:https://doi.org/10.1103/PhysRevLett.55.875
©1985 American Physical Society