Abstract
We demonstrate that strong interorbital interaction is very efficient to achieve superconductivity due to magnetic fluctuations in the iron pnictides. Fermi-surface states that are coupled by the antiferromagnetic wave vector are often of different orbital nature, causing pair-hopping interactions between distinct Fe-3d orbitals to become important. Performing a self-consistent fluctuation exchange calculation below T(c) we determine the superconducting order parameter as function of intra- and interorbital couplings. We find an s(+/-)-pairing state with T(c)similar or equal to 80 K for realistic parameters.
| Original language | English |
|---|---|
| Article number | ARTN 220502 |
| Number of pages | 4 |
| Journal | Physical Review B: Condensed matter and materials physics |
| Volume | 79 |
| Issue number | 22 |
| DOIs | |
| Publication status | Published - Jun 2009 |
Keywords
- SYSTEMS
- fluctuations
- superconducting materials
- SCF calculations
- antiferromagnetism
- iron compounds
- surface states
- Fermi surface
- 2-DIMENSIONAL HUBBARD-MODEL
Fingerprint
Dive into the research topics of 'Orbital coupling and superconductivity in the iron pnictides'. Together they form a unique fingerprint.Cite this
- APA
- Author
- BIBTEX
- Harvard
- Standard
- RIS
- Vancouver