Phonon splitting and anomalous enhancement of infrared-active modes in BaFe$_2$As$_2$

Details Phonon splitting and anomalous enhancement of infrared-active modes in BaFe$_2$As$_2$ Phonon splitting and anomalous enhancement of infrared-active modes in BaFe$_2$As$_2$

2011-08-05

arxiv.org/abs/1108.1416v1

Phys. Rev. B 84, 052501 (2011)

Physics

Condensed Matter

Superconductivity

5 pages, 3 figures, 1 table

Scientific paper

10.1103/PhysRevB.84.052501

We present a comprehensive infrared spectroscopic study of lattice dynamics in the pnictide parent compound BaFe$_2$As$_2$. In the tetragonal structural phase, we observe the two degenerate symmetry-allowed in-plane infrared active phonon modes. Following the structural transition from the tetragonal to orthorhombic phase, we observe splitting into four non-degenerate phonon modes and a significant phonon strength enhancement. These detailed data allow us to provide a physical explanation for the anomalous phonon strength enhancement as the result of anisotropic conductivity due to Hund's coupling.

Affiliated with

Also associated with

No associations

Rating

Phonon splitting and anomalous enhancement of infrared-active modes in BaFe$_2$As$_2$ 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 Phonon splitting and anomalous enhancement of infrared-active modes in BaFe$_2$As$_2$, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Phonon splitting and anomalous enhancement of infrared-active modes in BaFe$_2$As$_2$ will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-929