An overview is given of the qualitative difference in angular dependencies of polarized Raman intensities for Si-Si, Si-Ge, and Ge-Ge vibrations in multilayers of Ge islands grown on Si. Data show that the dome-shaped Ge islands are fully relaxed and that the strain field is localized within the Si matrix. Measurements on corresponding samples containing pyramid-related islands do not indicate similar relaxation and strain transfer to the Si layers.
All Science Journal Classification (ASJC) codes
- Physics and Astronomy (miscellaneous)