Specific heat study of magnetic and superconducting transitions in CePt3Si
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- Motoyama Gaku
- Graduate School of Material Science, University of Hyogo
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- Maeda Katsuhiro
- Graduate School of Material Science, University of Hyogo
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- Oda Yasukage
- Graduate School of Material Science, University of Hyogo
書誌事項
- タイトル別名
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- Specific Heat Study of Magnetic and Superconducting Transitions in CePt<SUB>3</SUB>Si
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Measurements of specific heat between 80 mK to 4 K and electrical resistivity between 80 mK to 10 K were carried out for polycrystalline CePt3Si samples cut into small pieces (typically ∼10 mg). In the specific heat measurements, we observed an antiferromagnetic transition jump at TN=2.2 K for all the samples, while the heights have large variations. As regards superconductivity, we observed two distinct transition jumps at Tcl∼0.45 K and Tch∼0.75 K, which were the same for all the samples. From the measurements of specific heat and resistivity, systematic relations were found between antiferromagnetic and superconducting transitions. We conclude that antiferromagnetism, whose transition temperature is 2.2 K, coexists with superconductivity, whose transition temperature is Tcl. In this sample, residual electronic specific heat coefficient in the superconducting state γs was quite small, and specific heat divided by temperature below Tcl decreased almost linearly with decreasing temperature. In order to reveal the characteristic properties of the magnetism and superconductivity of the CePt3Si system, it is important to study the two superconducting phases with Tcl and Tch, respectively.
収録刊行物
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- Journal of the Physical Society of Japan
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Journal of the Physical Society of Japan 77 (4), 044710-044710, 2008
一般社団法人 日本物理学会
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詳細情報 詳細情報について
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- CRID
- 1390001204197491200
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- NII論文ID
- 130005436391
- 110006649429
- 210000107205
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- NII書誌ID
- AA00704814
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- ISSN
- 13474073
- 00319015
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- NDL書誌ID
- 9461467
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
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