Pressure effect on superconductivity and antiferroquadrupolar order in PrOs 4Sb 12

Takashi Tayama*, Toshiro Sakakibara, Hitoshi Sugawara, Hideyuki Sato

*この論文の責任著者

研究成果: ジャーナルへの寄稿学術論文査読

24 被引用数 (Scopus)

抄録

We report the results of the low-temperature dc magnetization measurements of PrOs 4Sb 12 under hydrostatic pressures up to 1.45 GPa. The pressure effect on the temperature dependence of magnetization and the magnetic phase diagram reveals that the crystal field energy splitting of a Γ 1 singlet ground state and a Γ 4 (2) triplet first exited state decreases with an increase in pressure, whereas the two superconducting transition temperatures along with the upper critical field decrease significantly. Our results suggest that the low-field superconducting state competes with the high-field antiferroquadrupolar ordered state.

本文言語英語
論文番号043707
ジャーナルJournal of the Physical Society of Japan
75
4
DOI
出版ステータス出版済み - 2006/04

ASJC Scopus 主題領域

  • 物理学および天文学一般

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