Pressure-Induced Change of the Antiferromagnetic Structure in CeRhIn5 Studied by In-NQR Measurements
Pressure-Induced Change of the Antiferromagnetic Structure in CeRhIn5 Studied by In-NQR Measurements
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通过 In-NQR 测量研究 CeRhIn5 中反铁磁结构的压力诱导变化
DOI：
10.1143/jpsjs.81sb.sb013
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发表时间：
2012
期刊：
影响因子：
--
通讯作者：
et al.
中科院分区：
文献类型：
--
作者：
M. Yashima;Y. Kitaoka;et al.
我们报道了一个不相称波向量qi =(1/2,1/2,0.297)的螺旋磁体cerhin5的磁性和超导性的压力诱导演化，通过115 in核四极共振（NQR）测量在p下。通过对115in - nqr谱的系统测量，表明在一个反铁磁量子临界点附近可以实现qc =(1/2,1/2,1/2)的相应的反铁磁序。在1.82 GPa下测量了核自旋-晶格弛豫速率（1/T1），观察到超导性和相应的反铁磁性均匀共存。下面对1/ t1数据的分析表明，在反铁磁量子临界点以上实现了强耦合超导。
We report a pressure-induced evolution of magnetism and superconductivity in a helical magnet CeRhIn5with an incommensurate wave vectorQi=(1/2,1/2,0.297) through the115In nuclear quadrupole resonance (NQR) measurements underP. From systematic measurements of the115In-NQR spectrum, it is suggested that the commensurate antiferromagnetic order withQc=(1/2,1/2,1/2) is realized near an antiferromagentic quantum critical point. The homogeneous coexistence of superconductivity and the commensurate antiferromagnetism is observed from the measurements of a nuclear spin–lattice relaxation rates (1/T1) at 1.82 GPa. The analysis for 1/T1data belowTcindicates that the strong coupling superconductivity is realized above an antiferromagnetic quantum critical point.