15N NMR studies of layered nitride superconductor LixZrNCl

被引:6
|
作者
Tou, H. [1 ,2 ]
Oshiro, S. [1 ]
Kotegawa, H. [1 ,2 ]
Taguchi, Y. [3 ,5 ]
Kishiume, Y. [4 ]
Kasahara, Y. [4 ]
Iwasa, Y. [4 ,5 ]
机构
[1] Kobe Univ, Dept Phys, Grad Sch Sci, Kobe, Hyogo 6578501, Japan
[2] JST TRIP, Kawaguchi, Saitama 3320012, Japan
[3] RIKEN, ASI, Cross Correlated Mat Res Grp, Wako, Saitama 3510198, Japan
[4] Tohoku Univ, Inst Mat Res, Sendai, Miyagi 9808577, Japan
[5] Japan Sci & Technol Corp, CREST, Kawaguchi, Saitama 3320012, Japan
关键词
Nitride; Superconductivity; ZrNCl; HfNCl; NMR; CHLORIDE;
D O I
10.1016/j.physc.2009.11.118
中图分类号
O59 [应用物理学];
学科分类号
摘要
NMR measurements were carried out on pristine ZrNCl and LixZrNCl. From the N-15-Knight shift study, the isotropic Knight shift, the traceless chemical (orbital) shift tensor and the traceless Knight shift tensor were determined as K-iso = -71 PPm. (sigma(1), sigma(2), sigma(3)) = (-55, -55, 110) ppm and (K-1, K-2, K-3) = (48, 48, -96) ppm, respectively. In the superconducting state, the fractional change of the N-15 NMR shift for H parallel to ab was observed, evidencing that the pairing symmetry is a spin-singlet state. (C) 2009 Elsevier B.V. All rights reserved.
引用
收藏
页码:S658 / S659
页数:2
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