Spin-singlet superconductivity with multiple gaps in PrFeAsO0.89F0.11

By K. Matano, Z. Ren, Xiaoli Dong, Lei Sun, Zhao Zhao, G. Zheng. 2008

150 citations recorded by the source corpus.

We report 75As and 19F NMR studies on the superconducting properties of the newly discovered compound PrFeAsO0.89F0.11 (Tc=45 K). The Knight shift in the direction of H∥ab-plane decreases below Tc to almost zero, which indicates spin-singlet pairing. The temperature dependencies of both the Knight shift and the spin lattice relaxation rate indicate that there are two gaps opening below Tc, with nodes in the gap function.

Subfields: Condensed Matter Physics, Electronic, Optical and Magnetic Materials

View Paper: https://www.semanticscholar.org/paper/2b2c64957743eff8c10f60329759a85d471a65b1

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In Condensed Matter Physics

1. R. Greene
2. J. Paglione

In Electronic, Optical and Magnetic Materials

1. R. Greene
2. J. Paglione

Citations in the corpus

• High-temperature superconductivity in iron-based materials (2010, methodology): “For instance, NMR experiments were quick to determine from Knight shift measurements that the SC state spin symmetry is probably single”