Heat capacity evidence for conventional superconductivity in the Type-II Dirac semi-metal PdTe$_2$
Heat capacity evidence for conventional superconductivity in the Type-II Dirac semi-metal PdTe$_2$
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DOI：
10.1103/physrevb.97.054515
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发表时间：
2018-01
期刊：
影响因子：
--
通讯作者：
Amit;Y. Singh
中科院分区：
文献类型：
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作者：
Amit;Y. Singh
我们使用电输运，磁阻，和热容的高品质单晶最近发现的超导II型狄拉克半金属PdTe$_2$的测量，探测它的超导相的性质。在T_c处的电子热容反常的大小，热容与低温T的指数关系，以及常规的H-T相图表明，PdTe_2中的超导性是常规的，尽管存在一个拓扑非平凡的费米表面带对导电有贡献。
We use electrical transport, magnetoresistance, and heat capacity measurements on high quality single crystals of the recently discovered superconducting Type-II Dirac semi-metal PdTe$_2$, to probe the nature of it's superconducting phase. The magnitude of the electronic heat capacity anomaly at $T_c$, the low temperature exponential $T$ dependence of the heat capacity, and a conventional $H - T$ phase diagram establish that the superconductivity in PdTe$_2$ is conventional in nature despite the presence of a topologically non-trivial Fermi surface band which contributes to the electrical conduction.