Abstract
We demonstrate the production of a thick layer of high-mobility electron gas by comparison of Shubnikov–de Haas oscillations with self-consistent calculations of the ground-state energy levels. Ion-gauge measurements of the average Al flux during a programmed growth sequence show that the Al profile for the parabolic-well structures studied here follows the design profile closely. The calculated and measured energy levels (-) agree within the uncertainty of the well parameters.
- Received 2 January 1990
DOI:https://doi.org/10.1103/PhysRevB.41.10700
©1990 American Physical Society