115In NQR studies of CeRhIn5 and CeCoIn5 under high pressure

被引：12
作者：
Kohori, Y [1 ]
Taira, H
Fukazawa, H
Kohara, T
Iwamoto, Y
Matsumoto, T
Maple, MB
机构：
[1] Chiba Univ, Dept Phys, Fac Sci, Chiba 2638522, Japan
[2] Chiba Univ, Grad Sch Sci & Technol, Chiba 2638522, Japan
[3] Kobe Univ, Div Cargo & Transportat Sci, Kobe, Hyogo 6580022, Japan
[4] Natl Inst Mat Sci, Tsukuba, Ibaraki 3050044, Japan
[5] Univ Calif San Diego, Dept Phys, La Jolla, CA 92093 USA
[6] Univ Calif San Diego, Inst Pure & Appl Phys Sci, La Jolla, CA 92093 USA
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2006年 / 408卷
关键词：
In-115; NQR; CeCoIn5; CeRhIn5; superconductivity; heavy fermion;
D O I：
10.1016/j.jallcom.2005.04.082
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
We have carried out In-115 nuclear quadrupole resonance (NQR) measurements in CeRhIn5 and CeCoIn5 under presure P. The nuclear spinlattice relaxation rates, 1/T-1, of In-115 indicated that the anisotropic superconductivity with line nodes occurred near an antiferromagnetic state. The application of P suppressed the antiferromagnetic, AF, spin fluctuations and moves the system away from the AF state to the non-magnetic Fermi liquid state. The P dependence of 1/T-1 in the superconducting state of CeCoIn5 shows that the magnitude of the superconducting energy gap scales with its T-C up to 3.0 GPa. (c) 2005 Elsevier B.V. All rights reserved.
引用
收藏
页码：51 / 53
页数：3
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