Physics – Condensed Matter – Materials Science
Scientific paper
2008-07-03
Physics
Condensed Matter
Materials Science
Scientific paper
10.1103/PhysRevB.78.134413
The lattice dynamic properties and spin-phonon coupling in DyMn$_2$O$_5$ are studied by using the density-functional theory. The calculated phonon frequencies are in very good agreement with experiments. We then compare the phonon modes calculated from different spin configurations. The results show that the phonon frequencies change substantially in different spin configurations, suggesting that the spin-phonon coupling in this material is very strong. Especially, the short range spin ordering has drastic effects on the highest Raman and IR phonon modes that might be responsible for the observed phonon anomalies near and above the magnetic phase transitions.
Cao Kun
Guo Guang-Can
He Lixin
Shen Tianqi
No associations
LandOfFree
First-principles study of the spin-lattice coulpling in spin frustrated DyMn$_2$O$_5$ does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with First-principles study of the spin-lattice coulpling in spin frustrated DyMn$_2$O$_5$, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and First-principles study of the spin-lattice coulpling in spin frustrated DyMn$_2$O$_5$ will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-115128