Abstract
In polar cubic crystals under strain, the splittings of long-wavelength optical phonon frequencies depend on the direction of propagation. It is shown that for propagation in specific directions the splittings disappear. Such spatial degeneracies are depicted through geometrical structures known as frequency quadrics, and resemble analogous situations of light propagation along the optic axes of biaxial crystals.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.