Abstract
Large deviations are measured in the cyclotron effective mass near the recently observed partial energy gap arising in strongly coupled GaAs double quantum wells (QW’s) subject to in-plane magnetic fields . The energy gap results from an anticrossing of the two QW dispersion curves, shifted in k space relative to one another by . The severely distorted dispersion near the gap yields an repressed by more than a factor of 3 near the upper gap edge, and enhanced by ∼50% near the lower gap edge. The data show excellent agreement with recent theoretical calculations.
- Received 10 January 1995
DOI:https://doi.org/10.1103/PhysRevB.51.11156
©1995 American Physical Society