Unconventional superconductivity and antiferromagnetic quantum phase transition in CeRhIn5: 115In-NQR study under pressure

M. Yashima; S. Kawasaki; H. Mukuda; Y. Kitaoka; H. Shishido; R. Settai; Y. Onuki

doi:10.1016/j.physb.2007.10.062

Unconventional superconductivity and antiferromagnetic quantum phase transition in CeRhIn₅: ¹¹⁵In-NQR study under pressure

M. Yashima, S. Kawasaki, H. Mukuda, Y. Kitaoka, H. Shishido, R. Settai, Y. Onuki

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

Abstract

We report on the pressure (P)-induced phase diagram of antiferromagnetism (AFM) and superconductivity (SC) which emerges at their border at zero magnetic field. The nuclear-quadrupole-resonance (NQR) measurements have revealed that AFM can take place in the superconducting state with T_c ∼ 2.1 K at P = 2.05 GPa and the AFM quantum phase transition (QPT) occurs near P = 2.1 GPa. These results reveal the existence of the tetracritical point in the P-T phase diagram of AFM and SC in CeRnIn₅. We also found the gapless nature in the uniformly coexisting phase of AFM and SC, indicating an intimate relationship between AFM and SC.

Original language	English
Pages (from-to)	914-916
Number of pages	3
Journal	Physica B: Condensed Matter
Volume	403
Issue number	5-9
DOIs	https://doi.org/10.1016/j.physb.2007.10.062
Publication status	Published - Apr 1 2008
Externally published	Yes

Keywords

Antiferromagnetism
Superconductivity
Tetracritical point

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Electrical and Electronic Engineering

Access to Document

10.1016/j.physb.2007.10.062

Cite this

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title = "Unconventional superconductivity and antiferromagnetic quantum phase transition in CeRhIn5: 115In-NQR study under pressure",

abstract = "We report on the pressure (P)-induced phase diagram of antiferromagnetism (AFM) and superconductivity (SC) which emerges at their border at zero magnetic field. The nuclear-quadrupole-resonance (NQR) measurements have revealed that AFM can take place in the superconducting state with Tc ∼ 2.1 K at P = 2.05 GPa and the AFM quantum phase transition (QPT) occurs near P = 2.1 GPa. These results reveal the existence of the tetracritical point in the P-T phase diagram of AFM and SC in CeRnIn5. We also found the gapless nature in the uniformly coexisting phase of AFM and SC, indicating an intimate relationship between AFM and SC.",

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T1 - Unconventional superconductivity and antiferromagnetic quantum phase transition in CeRhIn5

T2 - 115In-NQR study under pressure

AU - Yashima, M.

AU - Kawasaki, S.

AU - Mukuda, H.

AU - Kitaoka, Y.

AU - Shishido, H.

AU - Settai, R.

AU - Onuki, Y.

PY - 2008/4/1

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AB - We report on the pressure (P)-induced phase diagram of antiferromagnetism (AFM) and superconductivity (SC) which emerges at their border at zero magnetic field. The nuclear-quadrupole-resonance (NQR) measurements have revealed that AFM can take place in the superconducting state with Tc ∼ 2.1 K at P = 2.05 GPa and the AFM quantum phase transition (QPT) occurs near P = 2.1 GPa. These results reveal the existence of the tetracritical point in the P-T phase diagram of AFM and SC in CeRnIn5. We also found the gapless nature in the uniformly coexisting phase of AFM and SC, indicating an intimate relationship between AFM and SC.

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KW - Superconductivity

KW - Tetracritical point

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