Spin susceptibility in the superconducting state of the ferromagnetic superconductor UCoGe
Spin susceptibility in the superconducting state of the ferromagnetic superconductor UCoGe
复制标题
铁磁超导体 UCoGe 超导态的自旋磁化率
DOI：
10.1103/physrevb.88.085127
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发表时间：
2013
影响因子：
3.7
通讯作者：
T. Yamamura
中科院分区：
文献类型：
--
作者：
T. Hattori;K. Karube;Y. Ihara;K. Ishida;K. Deguchi;N. K. Sato;T. Yamamura
为了确定铁磁超导体UCoGe中的超导配对态，在垂直于自发磁化轴的磁场下，测量了超导态下的CoNMR Knight位移，它与微观自旋磁化率直接相关.这些行为以及超导状态中Co位置处的内部场的不变性排除了自旋-单重态配对，并且可以用具有沿轴沿着的大交换场的等自旋配对状态来解释，这由Mineev [Phys. Rev. B 81，180504（2010）PRBMDO 1098 -012110.1103/PhysRevB.81.180504]进行了研究。
In order to determine the superconducting paring state in the ferromagnetic superconductor UCoGe, theCo NMR Knight shift, which is directly related to the microscopic spin susceptibility, was measured in the superconducting state under magnetic fields perpendicular to the spontaneous magnetization axis.shows to be almost constant, but does not decrease below a superconducting transition. These behaviors as well as the invariance of the internal field at the Co site in the superconducting state exclude the spin-singlet pairing, and can be interpreted with the equal-spin pairing state with a large exchange field along theaxis, which was studied by Mineev [Phys. Rev. B 81, 180504 (2010)PRBMDO1098-012110.1103/PhysRevB.81.180504].