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 Volume 72 Issue 14
Page 144504-
published_at 2005-10
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Title ( eng ) |
Superconductivity and physical properties of Ba24Si100 determined from electric transport, specific-heat capacity, and magnetic susceptibility measurements
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Creator |
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
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Source Title |
Physical Review B - Condensed Matter and Materials Physics
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Volume | 72 |
Issue | 14 |
Start Page | 144504 |
Abstract |
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.
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NDC |
Physics [ 420 ]
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Language |
eng
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Resource Type | journal article |
Publisher |
American Physical Society
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Date of Issued | 2005-10 |
Rights |
Copyright (c) 2005 American Physical Society
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Publish Type | Version of Record |
Access Rights | open access |
Source Identifier |
[NCID] AA11187113
[ISSN] 1098-0121
[DOI] 10.1103/PhysRevB.72.144504
[DOI] http://dx.doi.org/10.1103/PhysRevB.72.144504
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