Abstract
The soft zone-center ${E}_{2u}$ mode was recently observed by means of hyper-Raman scattering by Inoue et al. [Phys. Rev. B 38, 6352 (1988)]. Knowing that the ${E}_{2u}$ mode drives the transition, we obtain the lower-symmetry space group of the transition, construct the free energy (including elastic coupling), and show the possible optical modes allowed by symmetry.
Full Text 
Sign-in/Register to access full text options
Sign-in/Register to access full text options 
Published version (
Free)
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
