High-pressure effect on the electronic state in CeNiGe3: Pressure-induced superconductivity

M. Nakashima, K. Tabata, A. Thamizhavel, T. C. Kobayashi, M. Hedo, Y. Uwatoko, K. Shimizu, R. Settai, Y. Onuki

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Abstract

We have measured the electrical resistivity of an antiferromagnetic Kondo compound CeNiGe3 under pressure. The Néel temperature initially increases with pressure P up to 3 GPa, then decreases rather steeply with further increasing pressure, and becomes zero at a critical pressure P c ≃ 5.5 GPa. The A and ρ0 values of the resistivity ρ0 + AT2 in the Fermi liquid relation become maximum around P c, the A value attaining an extremely large value which is comparable with that in a heavy fermion superconductor CeCu2Si2. Superconductivity is found below 0.48 K in a wide pressure region from 4 to 10 GPa. The upper critical field Hc2(0) is about 2 T, indicating heavy fermion superconductivity.

Original languageEnglish
Pages (from-to)L255-L262
JournalJournal of Physics Condensed Matter
Volume16
Issue number20
DOIs
Publication statusPublished - May 26 2004

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ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

Cite this

Nakashima, M., Tabata, K., Thamizhavel, A., Kobayashi, T. C., Hedo, M., Uwatoko, Y., Shimizu, K., Settai, R., & Onuki, Y. (2004). High-pressure effect on the electronic state in CeNiGe3: Pressure-induced superconductivity. Journal of Physics Condensed Matter, 16(20), L255-L262. https://doi.org/10.1088/0953-8984/16/20/L01