Transport, AC-susceptibility and PQR measurements of strongly electron correlated compound YbInCu4 at high pressures

S. Wada, T. Mito, T. Koyama, T. C. Kobayashi, T. Muramatsu, J. L. Sarrao

Research output: Contribution to journalArticle

Abstract

We have investigated physical properties of the valence fluctuating compound YbInCu4 at high pressures and low temperatures. The first-order valence transition temperature TV ∼ 42 K at ambient pressure is completely suppressed for pressures above 2.49 GPa. Present electrical resistivity data in the pressure- stabilized high-temperature (HT) phase exhibit successive shoulders at around 20 and 2.4 K. The former can reasonably be compared with the Kondo temperature TK ∼ 25 K estimated from the static-susceptibility data at ambient pressure. For pressures above 2.27 GPa, the ac-susceptibility showed a clear peak at 2.4 K, which can be explained as the onset of a long-range ferromagnetic ordering. 63Cu pure-quadrupole-resonance in the HT phase showed that the value of spin-lattice relaxation time T1 and the almost T-independent behavior are hardly affected with pressure up to 1.3 GPa, in contrast to the large increase in quadrupole frequency.

Original languageEnglish
Pages (from-to)3661-3663
Number of pages3
JournalInternational Journal of Modern Physics B
Volume17
Issue number18-20 II
Publication statusPublished - Aug 10 2003
Externally publishedYes

Keywords

  • Heavy fermion
  • High pressure
  • YbInCu

ASJC Scopus subject areas

  • Statistical and Nonlinear Physics
  • Condensed Matter Physics

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