Abstract
The magnetotransport of double-quantum-well structures reveals a high-magnetic-field regime in which quantum Hall states at odd-integer ν are missing, where ν is the number of filled energy levels. In these double wells, the ν=odd quantum Hall states originate from the symmetric-antisymmetric energy gap. With increasing barrier thickness between the two wells, initially the magnetic field destroys only the ν=1 state, then both the ν=1 and ν=3 states disappear. We attribute their destruction to the onset of interwell electron density fluctuations.
- Received 26 October 1989
DOI:https://doi.org/10.1103/PhysRevLett.64.1793
©1990 American Physical Society