Abstract
We present microscopically resolved, polarized spectroscopy of Raman scattering collected from tetragonal . The anisotropic response of first-order Raman peaks within a single tetragonal domain has been measured. From these data, we assign symmetries to the phonons seen in the first-order Raman spectrum which is normally complicated by uncontrolled domain structure. Using a translation stage, we map the local domain orientation of a crystal volume near the laser focus and compare it to wide-field polarized images. This technique can be performed with readily available instruments and is relevant to the study of a wide range of related materials, interfaces, and devices.
- Received 15 August 2016
- Revised 16 October 2016
DOI:https://doi.org/10.1103/PhysRevB.94.214107
©2016 American Physical Society