Unconventional superconductivity in CeIn3: 115In-NQR study under pressure

Shinji Kawasaki; Yu Kawasaki; Takeshi Mito; Guo Qing Zheng; Yoshio Kitaoka; Shingo Araki; Rikio Settai; Yoshichika Onuki

doi:10.1016/S0921-4534(02)02732-6

Unconventional superconductivity in CeIn₃: ¹¹⁵In-NQR study under pressure

Shinji Kawasaki, Yu Kawasaki, Takeshi Mito, Guo Qing Zheng, Yoshio Kitaoka, Shingo Araki, Rikio Settai, Yoshichika Onuki

Research output: Contribution to journal › Conference article › peer-review

1 Citation (Scopus)

Abstract

We report evidences for bulk nature and unconventional superconductivity in CeIn₃ at P = 2.65 GPa revealed by the measurements of nuclear-spin-lattice-relaxation time (T₁) and ac-susceptibility (ac-χ). Both the measurements of ac-χ and T₁ have pointed to a superconducting transition at T = 95 mK, which is very much lower than an onset temperature T_onset = 0.15 K at zero resistance. The temperature dependence of 1/T₁ shows no coherence peak just below T_c, indicative of an unconventional nature for the superconductivity.

Original language	English
Pages (from-to)	541-542
Number of pages	2
Journal	Physica C: Superconductivity and its applications
Volume	388-389
DOIs	https://doi.org/10.1016/S0921-4534(02)02732-6
Publication status	Published - May 1 2003
Externally published	Yes
Event	proceedings of the 23rd international conference on low temper - Hiroshima, Japan Duration: Aug 20 2002 → Aug 27 2002

Keywords

CeIn
Heavy-fermion
NQR
Pressure-induced superconductivity

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Energy Engineering and Power Technology
Electrical and Electronic Engineering

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10.1016/S0921-4534(02)02732-6

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Unconventional superconductivity in CeIn₃ : ¹¹⁵In-NQR study under pressure. / Kawasaki, Shinji; Kawasaki, Yu; Mito, Takeshi; Zheng, Guo Qing; Kitaoka, Yoshio; Araki, Shingo; Settai, Rikio; Onuki, Yoshichika.

In: Physica C: Superconductivity and its applications, Vol. 388-389, 01.05.2003, p. 541-542.

Research output: Contribution to journal › Conference article › peer-review

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abstract = "We report evidences for bulk nature and unconventional superconductivity in CeIn3 at P = 2.65 GPa revealed by the measurements of nuclear-spin-lattice-relaxation time (T1) and ac-susceptibility (ac-χ). Both the measurements of ac-χ and T1 have pointed to a superconducting transition at T = 95 mK, which is very much lower than an onset temperature Tonset = 0.15 K at zero resistance. The temperature dependence of 1/T1 shows no coherence peak just below Tc, indicative of an unconventional nature for the superconductivity.",

keywords = "CeIn, Heavy-fermion, NQR, Pressure-induced superconductivity",

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AU - Kawasaki, Shinji

AU - Kawasaki, Yu

AU - Mito, Takeshi

AU - Zheng, Guo Qing

AU - Kitaoka, Yoshio

AU - Araki, Shingo

AU - Settai, Rikio

AU - Onuki, Yoshichika

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AB - We report evidences for bulk nature and unconventional superconductivity in CeIn3 at P = 2.65 GPa revealed by the measurements of nuclear-spin-lattice-relaxation time (T1) and ac-susceptibility (ac-χ). Both the measurements of ac-χ and T1 have pointed to a superconducting transition at T = 95 mK, which is very much lower than an onset temperature Tonset = 0.15 K at zero resistance. The temperature dependence of 1/T1 shows no coherence peak just below Tc, indicative of an unconventional nature for the superconductivity.

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KW - Heavy-fermion

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KW - Pressure-induced superconductivity

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