GaNQR relaxation rates in superconductor PuRhGa5

被引：0

作者：

Sakai, H. ^{[1
]}

Kambe, S. ^{[1
]}

Tokunaga, Y. ^{[1
]}

Fujimoto, T. ^{[1
]}

Walstedt, R. E. ^{[1
]}

Yasuoka, H. ^{[1
]}

Aoki, D.

Homma, Y.

Yamamoto, E. ^{[1
]}

Nakamura, A. ^{[1
]}

Shiokawa, Y. ^{[1
,2
]}

Nakajima, K. ^{[3
]}

Arai, Y. ^{[3
]}

Matsuda, T. D. ^{[1
]}

Haga, Y. ^{[1
]}

Onuki, Y. ^{[1
,4
]}

机构：

[1] Japan Atom Energy Agcy, Adv Sci Res Ctr, Oarai, Ibaraki 3191195, Japan

[2] Tohoku Univ, Inst Mat Res, Oarai, Ibaraki 3111313, Japan

[3] Japan Atom Energy Agcy, Dept Nucl Energy Syst, Tokai, Ibaraki 3191195, Japan

[4] Osaka Univ, Dept Phys, Toyonaka, Osaka 5600043, Japan

来源：

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS | 2007年 / 68卷 / 11期

关键词：

superconductor; NQR;

D O I：

10.1016/j.jpcs.2007.08.039

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Nuclear quadupole resonance (NQR) measurements have been performed on the Pu-based superconductor PuRhGa5 with a transition temperature of similar to 8.8 K. NQR lines ascribed to Ga-69(2), Ga-71(2), and Ga-69(1) have been found in zero field. Spin-lattice relaxation rate (1/T-1) data for these lines have been measured in the superconducting state. The temperature variation of 1/T-1, can be interpreted in terms of a line-nodal superconducting gap. Data for both the Ga-69(2) and Ga-69(1) NQR lines show a constant-T1T behavior between T-c and T*similar to 30 K, which suggests that a coherent Fermi-liquid state sets in below T*. The modified Korringa relation using 1/T-1 and Knight shift data in an applied field indicates that the normal state of PuRhGa5 can be regarded as an antiferromagnetically correlated metal. (c) 2007 Elsevier Ltd. All rights reserved.

引用

页码：2103 / 2106

页数：4

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