Anisotropic Magnetic Fluctuations in the Ferromagnetic Superconductor UCoGe Studied by Direction-Dependent Co-59 NMR Measurements

作者:Ihara Y*; Hattori T; Ishida K; Nakai Y; Osaki E; Deguchi K; Sato N K; Satoh I
来源:Physical Review Letters, 2010, 105(20): 206403.
DOI:10.1103/PhysRevLett.105.206403

摘要

We have carried out direction-dependent Co-59 NMR experiments on a single crystal sample of the ferromagnetic superconductor UCoGe in order to study the magnetic properties in the normal state. The Knight-shift and nuclear spin-lattice relaxation rate measurements provide microscopic evidence that both static and dynamic susceptibilities are ferromagnetic with strong Ising anisotropy. We discuss that superconductivity induced by these magnetic fluctuations prefers spin-triplet pairing state.

  • 出版日期2010-11-10