Pressure-induced superconductivity in an antiferromagnet CeRh2Si2

Shingo Araki; Miho Nakashima; Rikio Settai; Tatsuo C. Kobayashi; Yoshichika Onuki

doi:10.1088/0953-8984/14/21/102

Pressure-induced superconductivity in an antiferromagnet CeRh₂Si₂

Shingo Araki, Miho Nakashima, Rikio Settai, Tatsuo C. Kobayashi, Yoshichika Onuki

Research output: Contribution to journal › Article › peer-review

71 Citations (Scopus)

Abstract

We studied the pressure effect by measuring the electrical resistivity for a high-quality single crystal of an antiferromagnet CeRh₂Si₂ with the tetragonal structure. The Néel temperature becomes zero around 1 GPa. An onset of superconductivity appears below 0.5 K in a relatively wide pressure region from 0.97 to 1.20 GPa, while the resistivity zero, which appears below 0.4 K, is found to be located in an extremely narrow region from 1.03 to 1.08 GPa. Correspondingly the A value of the Fermi liquid relation in the electrical resistivity (ρ = ρ₀+A T²) becomes maximum around 1 GPa. Superconductivity is realized in a heavy fermion state.

Original language	English
Article number	102
Pages (from-to)	L377-L383
Journal	Journal of Physics Condensed Matter
Volume	14
Issue number	21
DOIs	https://doi.org/10.1088/0953-8984/14/21/102
Publication status	Published - Jun 3 2002
Externally published	Yes

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics

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abstract = "We studied the pressure effect by measuring the electrical resistivity for a high-quality single crystal of an antiferromagnet CeRh2Si2 with the tetragonal structure. The N{\'e}el temperature becomes zero around 1 GPa. An onset of superconductivity appears below 0.5 K in a relatively wide pressure region from 0.97 to 1.20 GPa, while the resistivity zero, which appears below 0.4 K, is found to be located in an extremely narrow region from 1.03 to 1.08 GPa. Correspondingly the A value of the Fermi liquid relation in the electrical resistivity (ρ = ρ0+A T2) becomes maximum around 1 GPa. Superconductivity is realized in a heavy fermion state.",

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AU - Araki, Shingo

AU - Nakashima, Miho

AU - Settai, Rikio

AU - Kobayashi, Tatsuo C.

AU - Onuki, Yoshichika

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AB - We studied the pressure effect by measuring the electrical resistivity for a high-quality single crystal of an antiferromagnet CeRh2Si2 with the tetragonal structure. The Néel temperature becomes zero around 1 GPa. An onset of superconductivity appears below 0.5 K in a relatively wide pressure region from 0.97 to 1.20 GPa, while the resistivity zero, which appears below 0.4 K, is found to be located in an extremely narrow region from 1.03 to 1.08 GPa. Correspondingly the A value of the Fermi liquid relation in the electrical resistivity (ρ = ρ0+A T2) becomes maximum around 1 GPa. Superconductivity is realized in a heavy fermion state.

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