de Haasaaavan Alphen effect in Formula Not Shown under pressure

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• 作者：Shishido ; Hiroaki ; Settai ; Rikio ; Hashimoto ; Shin ; Kubo ; Tetuo ; Harima ; Hisatomo ; ??nuki ; Yoshichika
• 刊名：Physica B: Physics of Condensed Matter
• 出版年：2005
• 出版时间：April 30, 2005
• 年：2005
• 卷：359-361
• 期：Complete
• 页码：184-186
• 全文大小：200 K

文摘

We have carried out the de Haas–van Alphen (dHvA) experiment of an antiferromagnet CeRhIn₅ under pressure. The detected dHvA branches α_i (i=1,2,3) and β₂ at ambient pressure are well explained by the corresponding dHvA branches in LaRhIn₅, indicating that the f electron is localized at ambient pressure. At 2.9 GPa, where the antiferromagnetic ordering disappears completely, a new branch appears. This is approximately the same as that of 4f-itinerant Fermi surface in CeCoIn₅, suggesting that the 4f electronic state is changed into an itinerant one.