Superconductivity at 5.4 K in β-Bi2Pd
Superconductivity at 5.4 K in β-Bi2Pd
复制标题
DOI：
10.1143/jpsj.81.113708
复制
发表时间：
2012-11-01
影响因子：
1.7
通讯作者：
Maeda, Atsutaka
中科院分区：
文献类型：
--
作者：
Imai, Yoshinori;Nabeshima, Fuyuki;Maeda, Atsutaka
我们通过研究超导转变温度为 5.4 K 的高质量 Bi2Pd 单晶（β-Bi2Pd；空间群：I4/mmm）的电阻率、磁化率和比热来研究其体超导性。在温度高于 40-50 K 时，电阻率的温度依赖性表现出向上凸的行为，这可以使用并联电阻模型来解释。此外，上临界磁场和比热的温度依赖性表明β-Bi2Pd是多带/多隙超导体。
We investigate bulk superconductivity in a high-quality single crystal of Bi2Pd (beta-Bi2Pd; space group: I4/mmm) with a superconducting transition temperature of 5.4 K, by exploring its electrical resistivity, magnetic susceptibility, and specific heat. The temperature dependence of the electrical resistivity shows convex-upward behavior at temperatures greater than 40-50 K, which can be explained using a parallel-resistor model. In addition, the temperature dependences of the upper critical magnetic field and the specific heat suggest that beta-Bi2Pd is a multiple-band/multiple-gap superconductor.