Anisotropic magnetic fluctuations in the ferromagnetic superconductor UCoGe studied by direction-dependent 59Co NMR measurements |
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| Authors: | Ihara Y Hattori T Ishida K Nakai Y Osaki E Deguchi K Sato N K Satoh I |
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| Institution: | Department of Physics, Graduate School of Science, Kyoto University, Kyoto 606-8502, Japan. ihara@scphys.kyoto-u.ac.jp |
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| Abstract: | We have carried out direction-dependent 59Co 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. |
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