Enhancement of relaxation rates in the normal state of superconductor PuRhGa:NQR relaxation study

Sakai, Hironori ; Kambe, Shinsaku ; Tokunaga, Yo ; Fujimoto, Tatsuya; Walstedt, R. E.*; Yasuoka, Hiroshi; Aoki, Dai*; Homma, Yoshiya*; Yamamoto, Etsuji ; Nakamura, Akio; Shiokawa, Yoshinobu*; Nakajima, Kunihisa ; Arai, Yasuo; Matsuda, Tatsuma; Haga, Yoshinori ; Onuki, Yoshichika*

The spin-lattice relaxation rates () have been measured under zero fieldusing nuclear quadrupole resonance (NQR) linesin superconductor PuRhGa and Pauli-paramagnet LuCoGa. In the reference LuCoGa with fully-occupied shell, the shows the constant behavior of $(T_1T)^{-1}=0.495pm0.002$ (secK) $^{-1}$ . On the other hand, in PuRhGa, is much larger than in LuCoGaand the behavior below 30 K is seen, where its $(T_{1}T)^{-1}$ value is 3.27 0.005 (secK) $^{-1}$ . These results suggest a development of coherent Fermi liquid stateincorporated with electronsbelow 30 K in PuRhGa.

Language	:	English
Journal	:	Journal of Magnetism and Magnetic Materials
Volume	:	310
Number	:	2, Part1
Pages	:	p.e118 - e119
Publication Year/Month	:	2007/03
Meeting title	:	17th International Conference on Magnetism (ICM 2006)
Held date	:	2006/08
Location (city)	:	Kyoto
Location (country)	:	Japan
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Cooperating Institute	:	東北大学金属材料研究所; 大阪大学

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Registration No. : BB20061361
JAEA Abstracts No. : 35000544
Paper Submission No. : 2018

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