Electrical Resistivity of Amorphous Ce-Ru Alloy under High Pressure and High Magnetic Field

Takeshi Sakai, Tomoko Kagayama, Gendo Oomi, Kenji Sumiyama, Yoshiya Homma, Kenji Suzuki

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

The electrical resistivity, ρ, of amorphous Ce58Ru42 alloy (a-CeRu) has been measured as a function of temperature (T) at various pressures (P) up to 14GPa. At room temperature ρ decreases rapidly with increasing pressure: ∂log ρ/∂P= -0.9 GPa-1 below 2GPa. The log T dependence in the ρ(T) curve due to Kondo scattering is observed up to 14 GPa. The slope of the ρ vs log T curve decreases with increasing pressure. At 4.2 K the magnetoresistance. Δρ/ρ, is positive and decreases with increasing pressure. These results suggest that the Kondo temperature. TKappa;, decreases with pressure in a-CeRu, i.e., the Kondo effect is suppressed by applying pressure.

Original languageEnglish
Pages (from-to)1154-1157
Number of pages4
Journaljournal of the physical society of japan
Volume65
Issue number5
DOIs
Publication statusPublished - 1996

Keywords

  • Amorphous heavy fermion
  • Cerium-ruthenium alloy
  • Electrical resistivity
  • High magnetic field
  • High pressure
  • Kondo effect
  • Magnetoresistance

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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