La-NQR study of superconductivity in La3Ir2Ge2

被引：3
作者：
Kishimoto, Y [1 ]
Kawasaki, Y
Ohno, T
Li, DX
Homma, Y
Shiokawa, Y
机构：
[1] Univ Tokushima, Fac Engn, Dept Phys, Tokushima 7708506, Japan
[2] Tohoku Univ, Inst Mat Res, Oarai, Ibaraki 3111313, Japan
来源：
PHYSICA B-CONDENSED MATTER | 2005年 / 359卷
关键词：
La3Ir2Ge2; superconductivity; NQR;
D O I：
10.1016/j.physb.2005.01.128
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
La-139-NQR measurement has been made in a superconductor La3Ir2Ge2. The spin-lattice relaxation rate 1/T-1, measured in the normal state is proportional to the temperature T, indicating that La3Ir2Ge2, is a simple metal. In the superconducting state, a small coherence peak in 1/T-1 appears just below the superconducting transition temperature T-c = 4.7 K and 1/T-1 decreases exponentially well below T, with decreasing temperatures. It is concluded that La3Ir7Ge2 is a BCS superconductor with an energy gap 2 Delta(0)/k(B)T(c) = 3.52. (c) 2005 Elsevier B.V. All rights reserved.
引用
收藏
页码：503 / 505
页数：3
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