论文标题
SNAS拓扑超导体的详细磁热容量分析
Detailed magneto-heat capacity analysis of SnAs topological superconductor
论文作者
论文摘要
在本文中，我们报告了超导SNA的磁热能力分析，该分析通过X射线衍射（XRD），X射线光电子光谱（XPS）和磁通型传输测量来表征。研究的SNAS超导体证明了在4K左右的超导性存在，并且相同的是持续到250OE的施加场。超导性的大体性质是通过AC敏感性以及热容量测量确定的。磁热的容量测量表明，SNA是完全间隙的S波超导体。通过计算出的超导物理参数可以很好地支持这一发现。此外，在不同磁场上残留的Sommerfeld系数的计算证实了SNA中的无节点超导性。
In this article, we report magneto-heat capacity analysis of superconducting SnAs, which is characterized through X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and magneto-transport measurements. The studied SnAs superconductor evidenced the presence of superconductivity at around 4K, and the same is seen to persist up to an applied field of 250Oe. The bulk nature of superconductivity is determined through AC susceptibility along with heat capacity measurements. Magneto-heat capacity measurements show SnAs to be a fully gapped s wave superconductor. This finding is well supported by calculated superconducting physical parameters. Further, the calculation of the residual Sommerfeld coefficient at different fields confirms node-less superconductivity in SnAs.
