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arXiv 1104.0633cond-mat.supr-concond-mat.str-el
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非中心对称BiPd体系的超导电性

Superconductivity in non-centrosymmetric BiPd system

Bhanu Joshi, A. Thamizhavel, S. Ramakrishnan

摘要:

本工作通过研究高质量单斜BiPd($α$,空间群P2 $_1$)样品的电阻率、磁化率和热容,确定了其在3.87 K以下的体超导性。我们证明了它是一种干净的具有中等电子-声子耦合的II型超导体,并确定了它的超导和正常态参数。虽然$α$ -BiPd是具有大电子热容的非中心对称超导体(因此,大的$γ$),但费米能级处电子带的自旋轨道分裂的影响很小。这对$α$ -BiPd的超导性能影响不大。

英文摘要:

In this work, we establish the bulk superconductivity of a high quality sample of monoclinic BiPd ($α$-BiPd, space group P2$_1$) below 3.87 K by studying its electrical resistivity, magnetic susceptibility and heat capacity. We show that it is clean type-II superconductor with moderate electron-phonon coupling and determine its superconducitng and normal state parameters. Although $α$-BiPd is a noncentrosymmetric superconductor with large electronic heat capacity (therefore, large $γ$), the effect of spin-orbit splitting of the electronic bands at the Fermi level is small. This makes little influence on the superconducting properties of $α$-BiPd.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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