Fermi-level Dirac crossings in 4d and 5d cubic metal oxides: NaPd3 O4 and NaPt3 O4

Samuel M.L. Teicher, Leo K. Lamontagne, Leslie M. Schoop, Ram Seshadri

Research output: Contribution to journalArticle

1 Scopus citations

Abstract

The cubic oxide metals NaM3O4 (M=Pd or Pt) crystallize in the nonsymmorphic Pm3ąn space group. First-principles calculations are employed here to understand the role of the MO4 square planes and M-M interactions in the development of the electronic structure. The compounds host numerous Dirac crossings near the Fermi level which, in the absence of spin-orbit coupling, appear to form a cubic nodal state. Spin-orbit coupling fragments this nodal state into smaller regions with Dirac-like character, with the fragmenting being more pronounced in the M=Pt compound.

Original languageEnglish (US)
Article number195148
JournalPhysical Review B
Volume99
Issue number19
DOIs
StatePublished - May 28 2019

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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