NMR Shift Measurements of69Ga in Unconventional Superconductor PuRhGa5
NMR Shift Measurements of69Ga in Unconventional Superconductor PuRhGa5
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非常规超导体 PuRhGa5 中 69Ga 的 NMR 位移测量
DOI：
10.1143/jpsjs.75s.50
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发表时间：
2006
影响因子：
1.7
通讯作者：
Y. Ōnuki
中科院分区：
文献类型：
--
作者：
H. Sakai;Y. Tokunaga;T. Fujimoto;S. Kambe;R. Walstedt;H. Yasuoka;D. Aoki;Y. Homma;E. Yamamoto;A. Nakamura;Y. Shiokawa;K. Nakajima;Y. Arai;T. Matsuda;Y. Haga;Y. Ōnuki
测量了PuRhGa 5的Ga（2）位（4 i位）的NMR位移（K），该化合物在Tc ≤ 9K以下显示出各向异性的超导性.在正常状态下，K（T）在低于30 K时几乎与T无关。这一结果与弛豫速率测量结果一致。这种类似Korringa的行为表明在低于30 K时形成了费米液态。转移的超精细耦合常数已估计从K和体磁化率之间的关系，表现出较强的各向异性。还进行了超导态K（T）的测量。已经观察到超导状态下K的降低，这强烈表明自旋单重态配对。
The NMR shift ( K ) at the Ga(2) site (the 4 i site) has been measured in PuRhGa 5 , a compound which shows anisotropic superconductivity below T c ≈9 K. In the normal state, K ( T ) is very nearly independent of T below ∼30 K. This result is consistent with the relaxation rate measurements. This Korringa-like behavior indicates the formation of Fermi-liquid state below ∼30 K. The transferred hyperfine coupling constants have been estimated from the relation between K and the bulk susceptibility, showing a strong anisotropy. Measurements of K ( T ) in the superconducting state have also been performed. A decrease of K in the superconducting state has been observed, which strongly suggests a spin-singlet pairing.
超铀超导体PuRhGa_5中的各向异性超导能隙
DOI：
--
发表时间：
2005
期刊：
J. Phys. Soc. Jpn. 74
影响因子：
--
作者：
O.Sakai;et al.;S.Kambe et al.;H.Sakai et al.
通讯作者：
H.Sakai et al.