Examining the topological nature of superconductivity in PdTe2

DOI

PdTe2 was found to be superconducting below Tc = 1.7 K and a Type-II Dirac semimetal. A protected bulk Dirac point arises from a band inversion that occurs within the Te p-orbital manifold, and is induced by a naturally disparate out-of-plane dispersion of pz and px/y-derived bands along kz direction. Spin-ARPES measurements reveal that the surface states are strongly spin polarized (>70%). STM and heat capacity studies give no indication of nodes in the superconducting order parameter or of in-gap states. The helical spin polarization of the surface states and the apparent s-wave superconductivity suggested from thermodynamic measurements present a dichotomy and raises a promising prospect to whether superconductivity has also a topological nature. With the aid of muSR, we will look for the proposed exotic superconductivity and possible time-reversal symmetry breaking in the sample.

Identifier
DOI https://doi.org/10.5286/ISIS.E.98004782
Metadata Access https://icatisis.esc.rl.ac.uk/oaipmh/request?verb=GetRecord&metadataPrefix=oai_datacite&identifier=oai:icatisis.esc.rl.ac.uk:inv/98004782
Provenance
Creator Dr Sungwon Yoon; Mr ChanHyeon Lee; Professor KwangYong Choi; Dr Pabitra Biswas; Professor Yogesh Singh; Dr Suheon Lee
Publisher ISIS Neutron and Muon Source
Publication Year 2022
Rights CC-BY Attribution 4.0 International; https://creativecommons.org/licenses/by/4.0/
OpenAccess true
Contact isisdata(at)stfc.ac.uk
Representation
Resource Type Dataset
Discipline Natural Sciences; Physics
Temporal Coverage Begin 2018-09-23T08:30:00Z
Temporal Coverage End 2019-03-11T09:33:13Z