Spin fluctuations and uncoventional superconducting pairing

High- T-c cuprates, iron-based superconductors, heavy-fermion superconductors and kappa-type layered organic superconductors share some common features - the proximity of the superconducting state to the magnetic ordered state and the non-s-wave superconducting pairing function. It is generally believed that the Cooper pairings in these unconventional superconductors are mediated by spin fluctuations. In this paper, we present a brief overview on the spin dynamics and unconventional pairing, focusing on high- T-c, cuprates and iron-based superconductors. In particular, we will overview the properties of the neutron spin resonance and its possible origin, the pairing mechanism in Hubbard model within the weak-coupling framework and its application to the aforesaid unconventional superconductors. We point out that the interplay between magnetism and superconductivity is still an area of active research.

Automated summary

The paper discusses the common features and non-s-wave superconducting pairing mechanism in high-Tc cuprates and iron-based superconductors, highlighting the possible mediation of Cooper pairs by spin fluctuations. It emphasizes that the interplay between magnetism and superconductivity remains an active research area.