Upper critical field of the noncentrosymmetric superconductor BiPd

Research output: Contribution to journalResearch articleContributedpeer-review

Contributors

  • Darren C. Peets - , Max Planck Institute for Solid State Research, Seoul National University (First author)
  • Ana Maldonado - (Author)
  • Mostafa Enayat - (Author)
  • Peter Wahl - (Author)
  • Andreas P. Schnyder - (Author)

Abstract

The superconducting parameters and upper critical field of the noncentrosymmetric superconductor BiPd have proven contentious. This material is of particular interest because it is a rare example of a 4f-electron-free noncentrosymmetric superconductor of which crystals may be grown and cleaved, enabling surface-sensitive spectroscopies. Here, using bulk probes augmented by tunneling data on defects, we establish that the lower of the previously reported upper critical fields corresponds to the bulk transition. The material behaves as a nearly weak-coupled BCS s-wave superconductor, and we report its superconducting parameters as drawn from the bulk upper critical field. Possible reasons behind the order-of-magnitude discrepancy in the reported upper critical fields are discussed.

Details

Original languageEnglish
Article number174504
JournalPhys. Rev. B
Volume93
Publication statusPublished - 10 May 2016
Peer-reviewedYes
Externally publishedYes

External IDs

Scopus 84968867045

Keywords