11B and 13C NMR studies of borocarbide superconductor YNi2B2C

被引：5

作者：

Iwamoto, Y ^{[1
]}

Ueda, K ^{[1
]}

Kohara, T ^{[1
]}

机构：

[1] Himeji Inst Technol, Fac Sci, Dept Mat Sci, Himeji, Hyogo 6781297, Japan

来源：

SOLID STATE COMMUNICATIONS | 2000年 / 113卷 / 11期

关键词：

superconductors; nuclear resonances;

D O I：

10.1016/S0038-1098(99)00550-5

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We have carried out the measurements of the nuclear spin-lattice relaxation rate, (T-1)(-1), of B-11 in YNi2B2C Y(Ni0.8Co0.2)(2)B2C and Y(Ni0.7Co0.3)(2)B2C and of C-13 in YNi2B2C in a wide temperature range. In the normal state, (T1T)(-1) increases with decreasing temperature presumably due to the antiferromagnetic spin fluctuations. (T-1)(-1) in the superconducting state decreases rapidly with decreasing temperature with no Hebel-Slichter peak just below T-c. On further decreasing the temperature, (T-c)(-1) decreases linearly with temperature. Such behavior of (T-1)(-1) shows the possibility of unconventional superconductivity, such as d-wave superconductivity in high-T-c cuprates. (C) 2000 Elsevier Science Ltd. All rights reserved.

引用

页码：615 / 620

页数：6

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