2003年2月
A heat capacity anomaly at T* in a ferromagnetic superconductor UGe2
ACTA PHYSICA POLONICA B
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- 巻
- 34
- 号
- 2
- 開始ページ
- 515
- 終了ページ
- 518
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- 出版者・発行元
- ACTA PHYSICA POLONICA B, JAGELLONIAN UNIV, INST PHYSICS
We performed the heat capacity, C(T), measurement under high pressure for a ferromagnetic superconductor UGe2. At 1.15 GPa, we found a peak in C/T at a characteristic temperature, T-* = 6 K where the magnetization showed anomalous increase. At 1.28 GPa, above the critical pressure P-c(*) where T-* becomes 0 K, C/T does not show notable anomaly at zero magnetic field, but the application of the external field above 2.5 T induces the peak again at T-* > 0 K. It corresponds to the induction of T-* by the magnetic field. Our experimental result suggests that a second order phase transition takes place at T-* and thus a disappearance of the phase transition at T-* is of second order.
- リンク情報
- ID情報
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- ISSN : 0587-4254
- Web of Science ID : WOS:000181544200046