Physics – Condensed Matter – Superconductivity
Scientific paper
2010-06-18
Phys. Rev. B 82, 172508 (2010)
Physics
Condensed Matter
Superconductivity
4 pages, 5 Postscript figures
Scientific paper
10.1103/PhysRevB.82.172508
An optimally doped iron-based superconductor LaFeAsO$_{0.92}$F$_{0.08}$ with $T_c = 29$ K has been studied by inelastic powder neutron scattering. The magnetic excitation at $Q=1.15$ \AA$^{-1}$ is enhanced below $T_c$, leading to a peak at $E_{res}\sim13$ meV as the resonance mode, in addition to the formation of a gap at low energy below the crossover energy $\Delta_{c}\sim10 meV$. The peak energy at $Q=1.15$ \AA$^{-1}$ corresponds to $5.2 k_B T_c$ in good agreement with the other values of resonance mode observed in the various iron-based superconductors, even in the high-$T_c$ cuprates. Although the phonon density of states has a peak at the same energy as the resonance mode in the present superconductor, the $Q$-dependence is consistent with the resonance being of predominately magnetic origin.
Arai Masato
Christianson Andrew D.
Ishikado Motoyuki
Iyo Akira
Kodama Katsuaki
No associations
LandOfFree
Inelastic neutron scattering study on the resonance mode in an optimally doped superconductor LaFeAsO$_{0.92}$F$_{0.08}$ 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 Inelastic neutron scattering study on the resonance mode in an optimally doped superconductor LaFeAsO$_{0.92}$F$_{0.08}$, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Inelastic neutron scattering study on the resonance mode in an optimally doped superconductor LaFeAsO$_{0.92}$F$_{0.08}$ will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-261498