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

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

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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

Cite this

Kawasaki, S., Kawasaki, Y., Mito, T., Zheng, G. Q., Kitaoka, Y., Araki, S., Settai, R., & Onuki, Y. (2003). Unconventional superconductivity in CeIn₃: ¹¹⁵In-NQR study under pressure. Physica C: Superconductivity and its applications, 388-389, 541-542. https://doi.org/10.1016/S0921-4534(02)02732-6

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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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N2 - 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.

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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10.1016/S0921-4534(02)02732-6