Low-temperature specific heat and magnetic susceptibility near the pressure-induced quantum phase transition in Ce7Ni3
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ID | 19298 |
本文ファイル | |
著者 |
Ohmoto, Hirohisa
Pietrus, Thomas
Löhneysen, Hilbert Von
Koyama, Keiichi
Hane, Shingo
Goto, Tsuneaki
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抄録(英) | The pressure-induced magnetic-nonmagnetic transition in a stoichiometric compound Ce7Ni3 was investigated using measurements of the specific heat C and the magnetic susceptibility χ on single crystals down to 0.07 K. The results show that the Ne?el temperature TN decreases linearly with increasing pressure, and vanishes at Pc=0.39 GPa. At 0.36 GPa < Pc, the Cm/T curve deviates strongly from -lnT dependence below 0.5 K, and exhibits a broad maximum around 0.15 K. At 0.43 GPa > Pc, while, on the other hand, a T-independent behavior appears below 0.2 K. These findings indicate that the -lnT dependence observed near Pc between 0.5 and 6 K is a crossover phenomenon to a Fermi-liquid ground state. However, the continuous increase of χ down to 0.09 K at 0.43 GPa is at variance with conventional Fermi-liquid theory.
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掲載誌名 |
Physical Review B - Condensed Matter and Materials Physics
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巻 | 58巻
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号 | 18号
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開始ページ | 12 095
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終了ページ | 12 099
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出版年月日 | 1998-11-01
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出版者 | American Physical Society
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ISSN | 1098-0121
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NCID | |
出版者DOI | |
言語 |
英語
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NII資源タイプ |
学術雑誌論文
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広大資料タイプ |
学術雑誌論文
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DCMIタイプ | text
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フォーマット | application/pdf
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著者版フラグ | publisher
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権利情報 | Copyright (c) 1998 The American Physical Society.
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関連情報URL | |
部局名 |
先端物質科学研究科
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