paper

Review of nuclear magnetic resonance studies on iron-based superconductors

arXiv:1307.7528 · doi:10.1088/1674-1056/22/8/087414

Abstract

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- $T_{C}$ superconductors. In this paper, we review NMR studies on the structural transition, antiferromagnetic order, spin fluctuations, and superconducting properties of several iron-based high- $T_{C}$ superconductors, including LaFeAsO $_{1 - x}$ F $_{x}$ , LaFeAsO $_{1 - x}$ , BaFe $_{2}$ As $_{2}$ , Ba $_{1 - x}$ K $_{x}$ Fe $_{2}$ As $_{2}$ , Ca $_{0.23}$ Na $_{0.67}$ Fe $_{2}$ As $_{2}$ , BaFe $_{2}$ (As $_{1 - x}$ P $_{x}$ ) $_{2}$ , Ba(Fe $_{1 - x}$ Ru $_{x}$ ) $_{2}$ As $_{2}$ , Ba(Fe $_{1 - x}$ Co $_{x}$ ) $_{2}$ As $_{2}$ , Li $_{1 + x}$ FeAs, LiFe $_{1 - x}$ Co $_{x}$ As, NaFeAs, NaFe $_{1 - x}$ Co $_{x}$ As, K $_{y}$ Fe $_{2 - x}$ Se $_{2}$ , and (Tl,Rb) $_{y}$ Fe $_{2 - x}$ Se $_{2}$ .

Review article, 17 pages,33 figures, 56 references