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Heat capacity of type-I superconductivity in the Dirac semimetalPdTe2
Physical Review B ( IF 3.2 ) Pub Date : 2021-03-02 , DOI: 10.1103/physrevb.103.104502
M. V. Salis , Y. K. Huang , A. de Visser

Type-I superconductivity was recently reported for the Dirac semimetal PdTe2 (Tc1.6 K) with, remarkably, multiple critical fields and a complex phase diagram. Here, measurements of the specific heat utilizing a thermal relaxation technique are presented. Conventional weak-coupling BCS superconductivity is confirmed by examining the temperature dependence of the specific heat in zero field. By probing the latent heat accompanying the superconducting transition, thermodynamic evidence for type-I superconductivity is attained. The presence of the intermediate state is observed as a significant broadening of the superconducting transition onto lower temperatures at high fields as well as irreversibility in the specific heat in zero-field-cooled data at 8.5 mT.

中文翻译:

Dirac半金属PdTe2中I型超导的热容

最近报道了狄拉克半金属的I型超导性 碲化镉2个ŤC1.6K)具有多个关键字段和一个复杂的相图。在此,介绍了利用热弛豫技术测量比热的方法。通过检查零场中比热的温度依赖性,可以确认传统的弱耦合BCS超导性。通过探测伴随超导转变的潜热,获得了I型超导的热力学证据。观察到中间状态的存在是在8.5 mT的零场冷却数据中,高磁场下超导转变显着扩展到了较低的温度,以及比热的不可逆性。
更新日期:2021-03-02
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