NMR study of heavy fermion superconductor with no inversion symmetry CePt3Si

被引：6
|
作者：
Ueda, K. [1 ]
Koyama, T. [1 ]
Hamamoto, K. [1 ]
Kohara, T. [1 ]
Motoyama, G. [1 ]
Oda, Y. [1 ]
机构：
[1] Univ Hyogo, Grad Sch Mat Sci, Kamigori, Hyogo 6781297, Japan
来源：
JOURNAL OF APPLIED PHYSICS | 2006年 / 99卷 / 08期
关键词：
D O I：
10.1063/1.2177206
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We report Pt-195 and Si-29 NMR studies of an antiferromagnetic heavy fermion superconductor CePt3Si with no inversion symmetry in the crystal structure. The temperature dependence of spin-lattice relaxation rates (1/T-1) for Pt and Si nuclei measured between 2 and 300 K might be explained by the contributions from a low-lying crystalline-electric-field level and a quasiparticle due to a hybridization between the ground state and conduction electrons. Just below the superconducting transition temperature (T-c) no remarkable enhancement in 1/T-1 was observed within an experimental error. No significant decrease in Si-29 Knight shift was observed for parallel direction to the c axis below T-c. This indicates that spin triplet pairing is probably realized for the superconductivity. (C) 2006 American Institute of Physics.
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页数：3
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