$^{195}$ Pt-NMR study on noncentrosymmetric heavy-fermion superconductor CePtSi

Yogi, Mamoru*; Kitaoka, Yoshio*; Hashimoto, Shin*; Yasuda, Takashi*; Settai, Rikio*; Matsuda, Tatsuma; Haga, Yoshinori ; Onuki, Yoshichika; Rogl, P.*; Bauer, E.*

We report on magnetic and novel superconducting properties in heavy-fermion (HF) noncentrosymmetric compound CePtSi via the measurement of $^{195}$ Pt nuclear spin-lattice relaxation rate 1/. This compound reveals the uniform coexistence of antiferromagnetism ( $T_{rm N}$ =2.2 K) and superconductivity ( $T_{rm c}$ =0.75 K). CePtSi is the first HF superconductor that reveals a peak in 1/ just below $T_{rm c}$ and, additionally, does not follow the law that was observed for most unconventional HF superconductors. The novel relaxation behavior found below $T_{rm c}$ may be relevant with a possible novel SC state being realized in the noncentrosymmetric CePtSi.

Language	:	English
Journal	:	Journal of Physics and Chemistry of Solids
Volume	:	67
Number	:	1-3
Pages	:	p.522 - 524
Publication Year/Month	:	2006/01
Meeting title	:	7th International Conference on Spectroscopies in Novel Superconductors (SNS 2004)
Held date	:	2004/07
Location (city)	:	Sitges
Location (country)	:	Spain
Patent information	:
PDF	:
Paper URL	:	https://doi.org/10.1016/j.jpcs.2005.10.070
DOI for research data	:
Keywords	:	no keyword
Research Facility	:
Press Release	:
Article of JAEA R&D Review	:
Cooperating Institute	:	大阪大学

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Registration No. : BB20071396
JAEA Abstracts No. :
Paper Submission No. : 3954

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