Magnetism, superconductivity, and pairing symmetry in iron-based superconductors
Magnetism, superconductivity, and pairing symmetry in iron-based superconductors
We analyze antiferromagnetism and superconductivity in novel Fe-based superconductors within the itinerant model of small electron and hole pockets near (0,0) and $(\ensuremath{\pi},\ensuremath{\pi})$. We argue that the effective interactions in both channels logarithmically flow toward the same values at low energies; i.e., antiferromagnetism and superconductivity must be treated on equal …