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Report No.

Influence of self-irradiation damage on the Pu-based superconductor PuCoGa$$_5$$ probed by muon spin rotation

Oishi, Kazuki; Ito, Takashi; Higemoto, Wataru  ; Heffner, R. H.

PuCoGa$$_5$$ has attracted much interest because it has a high transition temperature $$T_{rm c}$$ ($$simeq$$ 18 K) compared with other 115 systems. According to the previous $$mu$$SR results, temperature dependence of magnetic penetration depth $$lambda$$ in PuCoGa$$_5$$ shows $$T$$-linear behavior, suggesting that the superconducting order parameter of this material may be $$d$$-wave symmetry. In order to elucidate that point, we have measured the magnetic field dependence of $$lambda$$ in this sample by means of $$mu$$SR technique. At our poster presentation, we discuss the symmetry of superconducting order parameter in PuCoGa$$_5$$ in detail.



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