Abstract
Using hydrostatic pressure to modify the strain in quantum wells we show an almost twofold increase of the built-in piezoelectric field in the wells from 1.4 MV/cm at atmospheric pressure to 2.6 MV/cm at 8.7 GPa. An analysis in terms of the total strain generated by the pressure suggests that the increase in the field arises from a significant dependence of the piezoelectric constants on strain.
- Received 5 June 2001
DOI:https://doi.org/10.1103/PhysRevB.64.241308
©2001 American Physical Society