Abstract
For an iron-based high Tc superconductor LaFeAsO 1-xFx, we construct a minimal model where all of the five Fe d bands turn out to be involved. We then investigate the origin of superconductivity with a five-band random-phase approximation by solving the Eliashberg equation. We conclude that the spin fluctuation modes arising from the nesting between the disconnected Fermi pockets realize basically an extended s-wave pairing, where the gap changes sign across the nesting vector.
| Original language | English |
|---|---|
| Article number | 025017 |
| Journal | New Journal of Physics |
| Volume | 11 |
| DOIs | |
| Publication status | Published - Feb 27 2009 |
ASJC Scopus subject areas
- Physics and Astronomy(all)
Fingerprint Dive into the research topics of 'Unconventional pairing originating from disconnected Fermi surfaces in the iron-based superconductor'. Together they form a unique fingerprint.
Cite this
Kuroki, K., Onari, S., Arita, R., Usui, H., Tanaka, Y., Kontani, H., & Aoki, H. (2009). Unconventional pairing originating from disconnected Fermi surfaces in the iron-based superconductor. New Journal of Physics, 11, [025017]. https://doi.org/10.1088/1367-2630/11/2/025017