An anomalously huge resistivity peak under pressure in CeRhGe

R. Asai; A. Thamizhavel; H. Shishido; T. Ueda; Y. Inada; R. Settai; T. C. Kobayashi; Y. Onuki

doi:10.1088/0953-8984/15/29/102

An anomalously huge resistivity peak under pressure in CeRhGe

R. Asai, A. Thamizhavel, H. Shishido, T. Ueda, Y. Inada, R. Settai, T. C. Kobayashi, Y. Onuki

Research output: Contribution to journal › Article

7 Citations (Scopus)

Abstract

We have measured the electrical resistivity under pressure up to 2 GPa for an antiferromagnet, CeRhGe. The resistivity at ambient pressure decreases monotonically below a Néel temperature T_N = 10 K. With increasing pressure P, the resistivity has a peak around 10 K, which is anomalously enhanced up to 1.2 GPa. With further increasing pressure, the resistivity peak is diminished; the Néel temperature becomes zero at a critical pressure P_c = 1.9 GPa. The A-value of the resistivity ρ in the Fermi liquid relation ρ = ρ₀ + AT² is also found to increase with increasing pressure and has a maximum at P_c which corresponds to the value for the heavy-fermion superconductor CeCu ₂Si₂.

Original language	English
Pages (from-to)	L463-L468
Journal	Journal of Physics Condensed Matter
Volume	15
Issue number	29
DOIs	https://doi.org/10.1088/0953-8984/15/29/102
Publication status	Published - Jul 30 2003

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics

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Asai, R., Thamizhavel, A., Shishido, H., Ueda, T., Inada, Y., Settai, R., Kobayashi, T. C., & Onuki, Y. (2003). An anomalously huge resistivity peak under pressure in CeRhGe. Journal of Physics Condensed Matter, 15(29), L463-L468. https://doi.org/10.1088/0953-8984/15/29/102

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title = "An anomalously huge resistivity peak under pressure in CeRhGe",

abstract = "We have measured the electrical resistivity under pressure up to 2 GPa for an antiferromagnet, CeRhGe. The resistivity at ambient pressure decreases monotonically below a N{\'e}el temperature TN = 10 K. With increasing pressure P, the resistivity has a peak around 10 K, which is anomalously enhanced up to 1.2 GPa. With further increasing pressure, the resistivity peak is diminished; the N{\'e}el temperature becomes zero at a critical pressure Pc = 1.9 GPa. The A-value of the resistivity ρ in the Fermi liquid relation ρ = ρ0 + AT2 is also found to increase with increasing pressure and has a maximum at Pc which corresponds to the value for the heavy-fermion superconductor CeCu 2Si2.",

author = "R. Asai and A. Thamizhavel and H. Shishido and T. Ueda and Y. Inada and R. Settai and Kobayashi, {T. C.} and Y. Onuki",

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T1 - An anomalously huge resistivity peak under pressure in CeRhGe

AU - Asai, R.

AU - Thamizhavel, A.

AU - Shishido, H.

AU - Ueda, T.

AU - Inada, Y.

AU - Settai, R.

AU - Kobayashi, T. C.

AU - Onuki, Y.

PY - 2003/7/30

Y1 - 2003/7/30

N2 - We have measured the electrical resistivity under pressure up to 2 GPa for an antiferromagnet, CeRhGe. The resistivity at ambient pressure decreases monotonically below a Néel temperature TN = 10 K. With increasing pressure P, the resistivity has a peak around 10 K, which is anomalously enhanced up to 1.2 GPa. With further increasing pressure, the resistivity peak is diminished; the Néel temperature becomes zero at a critical pressure Pc = 1.9 GPa. The A-value of the resistivity ρ in the Fermi liquid relation ρ = ρ0 + AT2 is also found to increase with increasing pressure and has a maximum at Pc which corresponds to the value for the heavy-fermion superconductor CeCu 2Si2.

AB - We have measured the electrical resistivity under pressure up to 2 GPa for an antiferromagnet, CeRhGe. The resistivity at ambient pressure decreases monotonically below a Néel temperature TN = 10 K. With increasing pressure P, the resistivity has a peak around 10 K, which is anomalously enhanced up to 1.2 GPa. With further increasing pressure, the resistivity peak is diminished; the Néel temperature becomes zero at a critical pressure Pc = 1.9 GPa. The A-value of the resistivity ρ in the Fermi liquid relation ρ = ρ0 + AT2 is also found to increase with increasing pressure and has a maximum at Pc which corresponds to the value for the heavy-fermion superconductor CeCu 2Si2.

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