Heat capacity of type-I superconductivity in the Dirac semimetal PdTe2

M. V. Salis, Y. K. Huang, and A. de Visser
Phys. Rev. B 103, 104502 – Published 2 March 2021
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Abstract

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.

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  • Received 12 September 2020
  • Revised 8 February 2021
  • Accepted 9 February 2021

DOI:https://doi.org/10.1103/PhysRevB.103.104502

©2021 American Physical Society

Physics Subject Headings (PhySH)

Condensed Matter, Materials & Applied Physics

Authors & Affiliations

M. V. Salis*, Y. K. Huang, and A. de Visser

  • Van der Waals–Zeeman Institute, University of Amsterdam, Science Park 904, 1098 XH Amsterdam, Netherlands

  • *m.v.salis@uva.nl
  • a.devisser@uva.nl

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Issue

Vol. 103, Iss. 10 — 1 March 2021

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