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 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, 05.2003, p. 541-542.

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

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title = "Unconventional superconductivity in CeIn3: 115In-NQR study under pressure",

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",

author = "Shinji Kawasaki and Yu Kawasaki and Takeshi Mito and Zheng, {Guo Qing} and Yoshio Kitaoka and Shingo Araki and Rikio Settai and Yoshichika Onuki",

note = "Funding Information: This work was supported by the COE Research (10CE2004) in Grant-in-Aid for Scientific Research from the Ministry of Education, Sport, Science and Culture of Japan. One of the author (Yu Kawasaki) has been supported by JSPS Research Fellowships for Young Scientists.; proceedings of the 23rd international conference on low temper ; Conference date: 20-08-2002 Through 27-08-2002",

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T1 - Unconventional superconductivity in CeIn3

T2 - proceedings of the 23rd international conference on low temper

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

N1 - Funding Information: This work was supported by the COE Research (10CE2004) in Grant-in-Aid for Scientific Research from the Ministry of Education, Sport, Science and Culture of Japan. One of the author (Yu Kawasaki) has been supported by JSPS Research Fellowships for Young Scientists.

PY - 2003/5

Y1 - 2003/5

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.

KW - CeIn

KW - Heavy-fermion

KW - NQR

KW - Pressure-induced superconductivity

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DO - 10.1016/S0921-4534(02)02732-6

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VL - 388-389

SP - 541

EP - 542

JO - Physica C: Superconductivity and its Applications

JF - Physica C: Superconductivity and its Applications

SN - 0921-4534

Y2 - 20 August 2002 through 27 August 2002

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