Coincidence of magnetic and valence quantum critical points in CeRhIn5 under pressure

Z. Ren; G. W. Scheerer; D. Aoki; K. Miyake; S. Watanabe; D. Jaccard

doi:10.1103/PhysRevB.96.184524

Coincidence of magnetic and valence quantum critical points in CeRhIn5 under pressure

Z. Ren, G. W. Scheerer, D. Aoki, K. Miyake, S. Watanabe, D. Jaccard

Materials Processing and Characterization Division

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

6 Citations (Scopus)

Abstract

We present accurate electrical resistivity measurements along the two principle crystallographic axes of the pressure-induced heavy-fermion superconductor CeRhIn5 up to 5.63 GPa. For both directions, a valence crossover line is identified in the p-T plane and the extrapolation of this line to zero temperature coincides with the collapse of the magnetic ordering temperature. Furthermore, it is found that the p-T phase diagram of CeRhIn5 in the valence crossover region is very similar to that of CeCu2Si2. These results point to the essential role of Ce-4f electron delocalization in both destroying magnetic order and realizing superconductivity in CeRhIn5 under pressure.

Original language	English
Article number	184524
Journal	Physical Review B
Volume	96
Issue number	18
DOIs	https://doi.org/10.1103/PhysRevB.96.184524
Publication status	Published - 2017 Nov 28

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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title = "Coincidence of magnetic and valence quantum critical points in CeRhIn5 under pressure",

abstract = "We present accurate electrical resistivity measurements along the two principle crystallographic axes of the pressure-induced heavy-fermion superconductor CeRhIn5 up to 5.63 GPa. For both directions, a valence crossover line is identified in the p-T plane and the extrapolation of this line to zero temperature coincides with the collapse of the magnetic ordering temperature. Furthermore, it is found that the p-T phase diagram of CeRhIn5 in the valence crossover region is very similar to that of CeCu2Si2. These results point to the essential role of Ce-4f electron delocalization in both destroying magnetic order and realizing superconductivity in CeRhIn5 under pressure.",

author = "Z. Ren and Scheerer, {G. W.} and D. Aoki and K. Miyake and S. Watanabe and D. Jaccard",

note = "Funding Information: We acknowledge J. Flouquet for enlightening discussions, and M. Lopez and S. M{\"u}ller for technical support. S.W. is supported by the Grant-in-Aid for Scientific Research (Grants No. 24540378, No. 15K05177, and No. 16H10177) from the Japan Society for the Promotion of Science (JSPS), and by JASRI (Grant No. 0046 in 2012B, 2013A, 2013B, 2014A, 2014B, and 2015A). K.M. is supported by a grant from JSPS (Grant No. 17K05555).",

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doi = "10.1103/PhysRevB.96.184524",

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T1 - Coincidence of magnetic and valence quantum critical points in CeRhIn5 under pressure

AU - Ren, Z.

AU - Scheerer, G. W.

AU - Aoki, D.

AU - Miyake, K.

AU - Watanabe, S.

AU - Jaccard, D.

N1 - Funding Information: We acknowledge J. Flouquet for enlightening discussions, and M. Lopez and S. Müller for technical support. S.W. is supported by the Grant-in-Aid for Scientific Research (Grants No. 24540378, No. 15K05177, and No. 16H10177) from the Japan Society for the Promotion of Science (JSPS), and by JASRI (Grant No. 0046 in 2012B, 2013A, 2013B, 2014A, 2014B, and 2015A). K.M. is supported by a grant from JSPS (Grant No. 17K05555).

PY - 2017/11/28

Y1 - 2017/11/28

N2 - We present accurate electrical resistivity measurements along the two principle crystallographic axes of the pressure-induced heavy-fermion superconductor CeRhIn5 up to 5.63 GPa. For both directions, a valence crossover line is identified in the p-T plane and the extrapolation of this line to zero temperature coincides with the collapse of the magnetic ordering temperature. Furthermore, it is found that the p-T phase diagram of CeRhIn5 in the valence crossover region is very similar to that of CeCu2Si2. These results point to the essential role of Ce-4f electron delocalization in both destroying magnetic order and realizing superconductivity in CeRhIn5 under pressure.

AB - We present accurate electrical resistivity measurements along the two principle crystallographic axes of the pressure-induced heavy-fermion superconductor CeRhIn5 up to 5.63 GPa. For both directions, a valence crossover line is identified in the p-T plane and the extrapolation of this line to zero temperature coincides with the collapse of the magnetic ordering temperature. Furthermore, it is found that the p-T phase diagram of CeRhIn5 in the valence crossover region is very similar to that of CeCu2Si2. These results point to the essential role of Ce-4f electron delocalization in both destroying magnetic order and realizing superconductivity in CeRhIn5 under pressure.

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Coincidence of magnetic and valence quantum critical points in CeRhIn5 under pressure

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