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

被引：201

作者：

Matano, K. ^{[1
]}

Ren, Z. A. ^{[2
]}

Dong, X. L. ^{[2
]}

Sun, L. L. ^{[2
]}

Zhao, Z. X. ^{[2
]}

Zheng, Guo-Qing ^{[1
]}

机构：

[1] Okayama Univ, Dept Phys, Okayama 7008530, Japan

[2] Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China

来源：

EPL | 2008年 / 83卷 / 05期

关键词：

D O I：

10.1209/0295-5075/83/57001

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report As-75 and F-19 NMR studies on the superconducting properties of the newly discovered compound PrFeAsO0.89F0.11 (T-c = 45 K). The Knight shift in the direction of H parallel to ab-plane decreases below T-c 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 T-c, with nodes in the gap function. Copyright (c) EPLA, 2008.

引用

页数：4

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