Abstract
For a newly discovered iron-based high Tc superconductor LaFeAsO1-xFx, we have first constructed 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 across the disconnected Fermi pockets realize an extended s-wave pairing, where, to be precise, the gap function is a 5 x 5 matrix.
| Original language | English |
|---|---|
| Pages (from-to) | 96-98 |
| Number of pages | 3 |
| Journal | journal of the physical society of japan |
| Volume | 77 |
| Issue number | SUPPL. C |
| DOIs | |
| Publication status | Published - Jan 1 2008 |
ASJC Scopus subject areas
- Physics and Astronomy(all)
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Kuroki, K., Onari, S., Arita, R., Usui, H., Tanaka, Y., Kontani, H., & Aoki, H. (2008). Unconventional superconductivity originating from disconnected Fermi surfaces in the iron-based oxypnictide. journal of the physical society of japan, 77(SUPPL. C), 96-98. https://doi.org/10.1143/JPSJS.77SC.96