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- Fri Dec 30, 2011 4:41 am
- Forum: Ground state
- Topic: Finding ground state with optical phonons
- Replies: 0
- Views: 1410
Finding ground state with optical phonons
Hello,everyone! There is a paragraph in a paper: The search for the ground state was started with the determination of the structure for which frequencies of all optical phonons at the Γ point would be positive. Since in the phonon spectrum of the P4/mmm phase of all the investigated superlattices, ...