An anomalously huge resistivity peak under pressure in CeRhGe

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

Research output: Contribution to journalArticle

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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 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.

Original languageEnglish
JournalJournal of Physics Condensed Matter
Volume15
Issue number29
DOIs
Publication statusPublished - Jul 30 2003

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electrical resistivity
Heavy fermion superconductors
heavy fermion superconductors
critical pressure
Fermi liquids
temperature
Temperature

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials

Cite this

An anomalously huge resistivity peak under pressure in CeRhGe. / Asai, R.; Thamizhavel, A.; Shishido, H.; Ueda, T.; Inada, Yoshihiko; Settai, R.; Kobayashi, Tatsuo; Onuki, Y.

In: Journal of Physics Condensed Matter, Vol. 15, No. 29, 30.07.2003.

Research output: Contribution to journalArticle

Asai, R. ; Thamizhavel, A. ; Shishido, H. ; Ueda, T. ; Inada, Yoshihiko ; Settai, R. ; Kobayashi, Tatsuo ; Onuki, Y. / An anomalously huge resistivity peak under pressure in CeRhGe. In: Journal of Physics Condensed Matter. 2003 ; Vol. 15, No. 29.
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AU - Thamizhavel, A.

AU - Shishido, H.

AU - Ueda, T.

AU - Inada, Yoshihiko

AU - Settai, R.

AU - Kobayashi, Tatsuo

AU - Onuki, Y.

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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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