Review of nuclear magnetic resonance studies on iron-based superconductors

摘要

The newly discovered iron-based superconductors have triggered renewed enormous research interest in the condensed matter physics community.Nuclear magnetic resonance (NMR) is a low-energy local probe for studying strongly correlated electrons,and particularly important for high-TC superconductors.In this paper,we review NMR studies on the structural transition,antiferromagnetic order,spin fluctuations,and superconducting properties of several iron-based high-Tc superconductors,including LaFeAsO1-xFx,LaFeAsO1-x,BaFe2As2,Ba1-xKxFe2As2,Ca0.23Nao.67Fe2As2,BaFe2(As1-xPx)2,Ba(Fe1-xRux)2As2,Ba(Fe1-xCox)2As2,Li1+xFeAs,LiFe1-xCoxAs,NaFeAs,NaFet-xCoxAs,KyFe2-xSe2,and (Tl,Rb)yFe2-xSe2.