Superconductivity and physical properties of Ba24Si100 determined from electric transport, specific-heat capacity, and magnetic susceptibility measurements

Physical Review B - Condensed Matter and Materials Physics 72 巻 14 号 144504- 頁 2005-10 発行
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タイトル ( eng )
Superconductivity and physical properties of Ba24Si100 determined from electric transport, specific-heat capacity, and magnetic susceptibility measurements
作成者
Rachi Takeshi
Yoshino Harukazu
Kumashiro Ryotaro
Katajima Masaki
Kobayashi Kensuke
Yokogawa Keiichi
Murata Keizo
Kimura Noriaki
Aoki Haruyoshi
Shimotani Hidekazu
Takenobu Taishi
Iwasa Yoshihiro
Sasaki Takahiro
Kobayashi Norio
Miyazaki Yuji
Saito Kazuya
Guo Fang Zhun
Kobayashi Keisuke
Osaka Keiichi
Kato Kenichi
Tanaka Masaki
Tanigaki Katsumi
収録物名
Physical Review B - Condensed Matter and Materials Physics
72
14
開始ページ 144504
抄録
Both Ba24Si100 and Ba24Ge100 with crystallographically identical structure are found to be superconducting at 1.4 and 0.27 K, respectively. Physical properties of this superconductor Ba24Si100 are studied by electric transport, specific heat capacity, and magnetic susceptibility measurements. The density of states at the Fermi level NEF=0.148 states eV-1(Siatom)-1 and a distinct jump of Cp at the superconducting transition temperature ΔCp=0.272JK-1mol-1 are obtained. An exponential fit of Cp below the superconducting states gives an energy gap 2Δ=0.423meV and shows that this is a superconductor having s-wave character or isotropic energy gap. On the basis of our experimental data other important physical parameters are also derived.
NDC分類
物理学 [ 420 ]
言語
英語
資源タイプ 学術雑誌論文
出版者
American Physical Society
発行日 2005-10
権利情報
Copyright (c) 2005 American Physical Society
出版タイプ Version of Record(出版社版。早期公開を含む)
アクセス権 オープンアクセス
収録物識別子
[NCID] AA11187113
[ISSN] 1098-0121
[DOI] 10.1103/PhysRevB.72.144504
[DOI] http://dx.doi.org/10.1103/PhysRevB.72.144504