Physics – Condensed Matter – Superconductivity
Scientific paper
2008-10-27
Phys. Rev. B 80, 214534 (2009)
Physics
Condensed Matter
Superconductivity
Scientific paper
In Fe-As based superconductors magnetism and superconductivity show strong sensitivity to the lattice, suggesting a possibility of unconventional electron-phonon coupling. We investigated c-axis polarized phonons in doped and undoped BaFe2As2 by inelastic X-ray scattering. Phonon peak positions and linewidths did not vary significantly as a function of doping either by Co or by K. The linewidth of the Fe vibration shows unusual wavevector-dependence, which may be due to hybridization with in-plane modes. Comparison with the density functional theory shows significant difference for the energy of the As-As vibrations (Raman active at the zone center) but not for the Fe-As vibrations (infrared-active at the zone center). This behavior cannot be explained by a 10% softening of Fe-As interaction strength as proposed previously for in-plane polarized vibrations.
Alatas A.
Asubedi A.
Bohnen Klaus Peter
Dmowski Wojtek
Egami Takeshi
No associations
LandOfFree
C-axis Phonons in Fe-As Based Superconductors Investigated by Inelastic X-ray Scattering 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 C-axis Phonons in Fe-As Based Superconductors Investigated by Inelastic X-ray Scattering, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and C-axis Phonons in Fe-As Based Superconductors Investigated by Inelastic X-ray Scattering will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-484864