Physics – Condensed Matter – Superconductivity
Scientific paper
2010-09-04
Phys. Rev. Lett. 106, 047003 (2011)
Physics
Condensed Matter
Superconductivity
12 pages, 9 figures
Scientific paper
10.1103/PhysRevLett.106.047003
The pairing mechanism in the iron-pnictide superconductors is still unknown. However, similarities to the cuprate high-temperature superconductors suggest that a similar mechanism may be at work. Recently, careful experimental studies of the spin excitation spectrum revealed, like in the cuprates, a strong temperature dependence in the normal state and a resonance feature in the superconducting state. Motivated by these findings, we develop a model of electrons interacting with a temperature dependent magnetic excitation spectrum based on these experimental observations. We apply it to analyse angle resolved photoemission and tunnelling spectra in Ba{1-x}KxFe2As2. We reproduce in quantitative agreement with experiment a renormalisation of the quasiparticle dispersion both in the normal and the superconducting state, and the dependence of the quasiparticle linewidth on binding energy. We estimate the strength of the coupling between electronic and spin excitations. Our findings support the possibility of a pairing mechanism based dominantly on such a coupling.
Eschrig Matthias
Grein Roland
Heimes Andreas
No associations
LandOfFree
Electronic dispersion anomalies in the iron pnictide superconductor Ba_{1-x}K_xFe_2As_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 Electronic dispersion anomalies in the iron pnictide superconductor Ba_{1-x}K_xFe_2As_2, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electronic dispersion anomalies in the iron pnictide superconductor Ba_{1-x}K_xFe_2As_2 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-284977