Superconductivity in epitaxial PtSb(0001) thin films

Publikation: Beitrag in Fachzeitschrift › Forschungsartikel › Beigetragen › Begutachtung

Beitragende

  • C. Müller - , Czech Academy of Sciences, Karlsuniversität Prag (Autor:in)
  • S. P. Bommanaboyena - , Czech Academy of Sciences (Autor:in)
  • A. Badura - , Czech Academy of Sciences, Karlsuniversität Prag (Autor:in)
  • T. Uchimura - , Tohoku University (Autor:in)
  • F. Husstedt - , Professur für Physik in hohen Magnetfeldern (gB/HZDR), Helmholtz-Zentrum Dresden-Rossendorf (HZDR) (Autor:in)
  • B. V. Schwarze - , Helmholtz-Zentrum Dresden-Rossendorf (HZDR) (Autor:in)
  • S. Banerjee - , Czech Academy of Sciences (Autor:in)
  • M. Ledinský - , Czech Academy of Sciences (Autor:in)
  • J. Michalicka - , Czech Academy of Sciences, Brno University of Technology (Autor:in)
  • M. Míšek - , Czech Academy of Sciences (Autor:in)
  • P. Proschek - , Karlsuniversität Prag (Autor:in)
  • M. Šindler - , Czech Academy of Sciences (Autor:in)
  • C. Timm - , Exzellenzcluster ctd.qmat: Complexity, Topology and Dynamics in Quantum Matter, Professur für Theorie der kondensierten Materie (Autor:in)
  • T. Helm - , Helmholtz-Zentrum Dresden-Rossendorf (HZDR) (Autor:in)
  • S. Fukami - , Tohoku University (Autor:in)
  • F. Krizek - , Czech Academy of Sciences (Autor:in)
  • D. Kriegner - , Czech Academy of Sciences (Autor:in)

Abstract

Building on earlier reports of superconductivity in bulk PtSb, we present a systematic study of superconductivity in epitaxial PtSb(0001) thin films grown on SrF2(111). Electrical transport measurements reveal a superconducting transition at Tc=1.72K. The field-induced broadening of the transition and the temperature dependence of the upper critical fields are consistent with type-II superconductivity. We determine the upper critical fields for magnetic fields applied perpendicular and parallel to the film plane and parametrize their temperature dependence using an anisotropic Ginzburg-Landau approach. For a representative film in the intermediate thickness regime (d=50nm), we obtain coherence lengths of ξab≈56nm and ξc≈14nm. Current-voltage characteristics show sizable critical currents, with a critical current density reaching Jc≈6×104A/cm2 at 0.5K. These results establish the superconducting properties of epitaxial PtSb thin films and provide a basis for lattice-matched heterostructures within the NiAs-type materials family.

Details

OriginalspracheEnglisch
Aufsatznummer094801
FachzeitschriftPhysical review materials
Jahrgang10
Ausgabenummer9
PublikationsstatusVeröffentlicht - 1 Sept. 2026
Peer-Review-StatusJa