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

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

研究成果: ジャーナルへの寄稿学術誌査読

3 被引用数 (Scopus)

抄録

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.

本文言語英語
ページ(範囲)78-79
ページ数2
ジャーナルjournal of the physical society of japan
76
SUPPL. A
DOI
出版ステータス出版済み - 1月 1 2007

!!!All Science Journal Classification (ASJC) codes

  • 物理学および天文学(全般)

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