Ru NMR and NQR Studies in CeRu_2

K. Ishida; H. Mukuda; Y. Kitaoka; K. Asayama; Y. Onuki

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Ru NMR and NQR Studies in CeRu_2

机译：CeRu_2中的Ru NMR和NQR研究

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We have carried out Ru NMR and NQR measurements in superconductor CeRu_2 having T_c = 6.1 K in the temperature range of 1.3-30K. From the ~(99)Ru NMR in 10.2 T above H_(c2), T_1 T= const was found in the measured-T range, and the value of T_1 T K~2 is almost the same as that in the uncorrelated Korringa relation, suggesting that there does not exist the strong spin fluctuation of Ru d-spins. The property of the superconducting state was investigated by using Ru NQR. We observed the Hebel-Slichter peak just below T_c and the exponential decrease in 1/T_1, indicating that this superconductivity has an ordinary s-wave character. The effect of Al substitution for Ru was also studied by NMR and NQR.

机译：我们在1.3-30K的温度范围内，在T_c = 6.1 K的超导体CeRu_2中进行了Ru NMR和NQR测量。从高于H_（c2）的10.2 T中的〜（99）Ru NMR中，在测得的T范围内发现T_1 T = const，T_1 TK〜2的值与非相关Korringa关系中的值几乎相同，这表明不存在Ru d自旋的强自旋波动。利用Ru NQR研究了超导态的性质。我们观察到Hebel-Slichter峰恰好位于T_c之下，并且指数下降了1 / T_1，表明该超导具有普通的s波特征。还通过NMR和NQR研究了Al替代Ru的效果。

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来源
《Zeitschrift fur Naturforschung. A, A journal of physical sciences》 |1996年第6期|p.793-796|共4页
作者
K. Ishida; H. Mukuda; Y. Kitaoka; K. Asayama; Y. Onuki;
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作者单位

Department of Material Physics, Faculty of Engineering Science, Osaka University, Toyonaka, Osaka 560, Japan;

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原文格式 PDF
正文语种 eng
中图分类物理学;
关键词
superconductor CeRu_2; NMR; NQR; T_1; knight shift;

机译：超导体CeRu_2;NMR;NQR;T_1;骑士位移;

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机译：核磁共振和NQR研究热力学稳定的准晶体

Ru NMR and NQR Studies in CeRu_2

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