Abstract

Large piezoelectric fields are present in CdTe-CdZnTe and CdTe-CdMnTe strained heterostructures grown along [111] axes. The optical properties are strongly modified and very interesting nonlinear effects are observed with potential applications. A detailed study of the simplest structure — a single quantum well coherently grown on a strain-free buffer layer leads to a better understanding of the role of the built-in field, allows extraction of quantitative data, and underlines some differences between structures incorporating Zn or Mn.

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