Electrical resistivity of heavy-fermion system of cubic YbCu5 under high pressures

Akihiro Mitsuda, Kiyonori Yamauchi, Naohito Tsujii, Kazuyoshi Yoshimura, Yosikazu Isikawa, Yuh Yamada

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4 Citations (Scopus)


Abstract Cubic YbCu5 with an AuBe5-type structure is one of the heaviest fermion systems in Yb- based compounds. In the Doniach diagram, its electronic state is in the vicinity of the quantum critical point. We examined the effects of pressure on the electrical resistivity p of cubic YbCu5. It is found that there exists no evidence of magnetic ordering up to 2.9 GPa. The T2 dependence of p at the lowest temperature, which corresponds to a Fermi liquid, is preserved up to 2.9 GPa. With increasing pressure, the T2 coefficient A increases, while the Kondo temperature Tκ decreases; this suggests that the electronic state approaches the quantum critical point.

Original languageEnglish
Pages (from-to)78-79
Number of pages2
Journaljournal of the physical society of japan
Issue numberSUPPL. A
Publication statusPublished - 2007

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)


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