Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
2009-12-10
Phys. Rev. Lett. 104, 157001 (2010)
Physics
Condensed Matter
Strongly Correlated Electrons
5 pages, discussions have been added, to be published in PRL
Scientific paper
10.1103/PhysRevLett.104.157001
In iron pnictides, we find that the moderate electron-phonon interaction due to the Fe-ion oscillation can induce the critical d-orbital fluctuations, without being prohibited by the Coulomb interaction. These fluctuations give rise to the strong pairing interaction for the s-wave superconducting (SC) state without sign reversal ($s_{++}$-wave state), which is consistent with experimentally observed robustness of superconductivity against impurities. When the magnetic fluctuations due to Coulomb interaction are also strong, the SC state shows a smooth crossover from the s-wave state with sign reversal ($s_\pm$-wave state) to the $s_{++}$-wave state as impurity concentration increases.
Kontani Hiroshi
Onari Seiichiro
No associations
LandOfFree
Orbital Fluctuation Mediated Superconductivity in Iron Pnictides: Analysis of Five Orbital Hubbard-Holstein Model 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 Orbital Fluctuation Mediated Superconductivity in Iron Pnictides: Analysis of Five Orbital Hubbard-Holstein Model, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Orbital Fluctuation Mediated Superconductivity in Iron Pnictides: Analysis of Five Orbital Hubbard-Holstein Model will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-594749