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 |
| Publication status | Published - 2008 |
| Externally published | Yes |
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ASJC Scopus subject areas
- Physics and Astronomy(all)
Cite this
Unconventional superconductivity originating from disconnected Fermi surfaces in the iron-based oxypnictide. / Kuroki, Kazuhiko; Onari, Seiichiro; Arita, Ryotaro; Usui, Hidetomo; Tanaka, Yukio; Kontani, Hiroshi; Aoki, Hideo.
In: Journal of the Physical Society of Japan, Vol. 77, No. SUPPL. C, 2008, p. 96-98.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Unconventional superconductivity originating from disconnected Fermi surfaces in the iron-based oxypnictide
AU - Kuroki, Kazuhiko
AU - Onari, Seiichiro
AU - Arita, Ryotaro
AU - Usui, Hidetomo
AU - Tanaka, Yukio
AU - Kontani, Hiroshi
AU - Aoki, Hideo
PY - 2008
Y1 - 2008
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=57549097843&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=57549097843&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:57549097843
VL - 77
SP - 96
EP - 98
JO - Journal of the Physical Society of Japan
JF - Journal of the Physical Society of Japan
SN - 0031-9015
IS - SUPPL. C
ER -