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Report No.

Favorable magnetic fluctuation anisotropy for unconventional superconductivity in $$f$$-electron systems

Kambe, Shinsaku  ; Sakai, Hironori   ; Tokunaga, Yo  ; Fujimoto, Tatsuya*; Walstedt, R. E.*; Ikeda, Shugo; Aoki, Dai*; Homma, Yoshiya*; Haga, Yoshinori   ; Shiokawa, Yoshinobu*; Onuki, Yoshichika*

We report spin-lattice relaxation time measurements in isostructural (HoCoGa$$_5$$ type) actinide compounds withdifferent ground states (paramagnet, antiferromagnet and superconductor) using single-crystal samples. The anisotropy oflocal magnetic fluctuation due to ${it LS}$ coupling on the actinide (magnetic) site is evaluated. In the superconductor PuRhGa$$_5$$, the ${it XY}$ type magnetic anisotropy is strong compared with non-superconducting compounds. Favorable magnetic anisotropy for $$d$$-wave superconductivity in $$f$$-electron systems is discussed.



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Category:Materials Science, Multidisciplinary



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