; Ga NQR study on a single crystalSakai, Hironori 
; Tokunaga, Yo ; Fujimoto, Tatsuya; Kambe, Shinsaku ; 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
Ga NMR/NQR studies have been performed on a single crystal of the transuranium superconductor PuRhGa with 
K. We have observed a 
Ga NQR line at 
29.15 MHz, and assigned it to the 
Ga site using the NMR results. The Ga NQR spin-lattice relaxation rate 
shows no coherence peak just below 
, but obeys 
behavior below . This result strongly suggests that PuRhGa is an unconventional superconductor having an anisotropic superconducting gap. The gap amplitude 2
and the residual density of states 
0.25 have been determined assuming a simple polar function of the form 
=
, where 
and 
are angular parameters on the Fermi surface.
Language |
: | English |
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: | 74 |
Number |
: | 6 |
Pages |
: | p.1710 - 1713 |
Publication Year/Month |
: | 2005/06 |
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Article of JAEA R&D Review |
: | Investigation of New Plutonium-Based Superconductor; Identification of Exotic Superconducting State by Nuclear Magnetic Resonance[ |
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