Metamagnetic behaviour in CeCu6

Yusuke Hirose, Fuminori Honda, Rikio Settai, Yoshichika Onuki

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1 Citation (Scopus)

Abstract

The metamagnetic behaviour, which corresponds to one of the characteristic properties in the heavy fermion compounds, was studied by measuring the electrical resistivity under pressure and magnetic field for a typical heavy fermion compound CeCu6 with orthorhombic structure. The transverse magnetoresistance at 100 mK indicated a peak structure at Hm = 20 kOe for the magnetic field H//c-axis under ambient pressure. Hm is found to increase linearly as a function of pressure and indicates Hm = 102 kOe at 1.75 GPa, for example. The quantum critical point is thus likely to exist at a slightly negative pressure value of ∼ 0.21 GPa from extrapolating Hm to zero. The ρ0 and A values in the electrical resistivity ρ = ρ0+AT2 decrease steeply in magnitude with increasing pressure and magnetic field, indicating that the heavy fermion state is destroyed by pressure and magnetic field.

Original languageEnglish
Article numberSA065
Journaljournal of the physical society of japan
Volume80
Issue numberSUPPL. A
DOIs
Publication statusPublished - 2011 Jul
Externally publishedYes

Keywords

  • CeCu
  • High pressure
  • Magnetoresistance
  • Metamagnetism

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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