TY - JOUR
T1 - Superconductivity and physical properties of Ba24Si100 determined from electric transport, specific-heat capacity, and magnetic susceptibility measurements
AU - Rachi, Takeshi
AU - Yoshino, Harukazu
AU - Kumashiro, Ryotaro
AU - Kitajima, Masaki
AU - Kobayashi, Kensuke
AU - Yokogawa, Keiichi
AU - Murata, Keizo
AU - Kimura, Noriaki
AU - Aoki, Haruyoshi
AU - Fukuoka, Hiroshi
AU - Yamanaka, Syoji
AU - Shimotani, Hidekazu
AU - Takenobu, Taishi
AU - Iwasa, Yoshihiro
AU - Sasaki, Takahiko
AU - Kobayashi, Norio
AU - Miyazaki, Yuji
AU - Saito, Kazuya
AU - Guo, Fangzhun
AU - Kobayashi, Keisuke
AU - Osaka, Keiichi
AU - Kato, Kenichi
AU - Takata, Masaki
AU - Tanigaki, Katsumi
PY - 2005/10/1
Y1 - 2005/10/1
N2 - 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.
AB - 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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U2 - 10.1103/PhysRevB.72.144504
DO - 10.1103/PhysRevB.72.144504
M3 - Article
AN - SCOPUS:29644435414
SN - 0163-1829
VL - 72
JO - Physical Review B-Condensed Matter
JF - Physical Review B-Condensed Matter
IS - 14
M1 - 144504
ER -