Magnetic and electronic properties of the Cu-substituted Weyl semimetal candidate ZrCo2Sn

Satya K. Kushwaha, Zhijun Wang, Tai Kong, Robert J. Cava

Research output: Contribution to journalArticle

11 Scopus citations

Abstract

We report that the partial substitution of Cu for Co has a significant impact on the magnetic properties of the Heusler-phase Weyl fermion candidate ZrCo2Sn. Polycrystalline samples of ZrCo2-xCuxSn (x = 0.0-1.0) exhibited a linearly decreasing ferromagnetic transition temperature and similarly decreasing saturated magnetic moment on increasing Cu substitution x. Materials with Cu contents near x = 1 and several other quaternary materials synthesized at the same x (ZrCoT′Sn (T′ = Rh, Pd, Ni)) display what appears to be non-ferromagnetic magnetization behavior with spin glass characteristics. Electronic structure calculations suggest that the half-metallic nature of unsubstituted ZrCo2Sn is disrupted significantly by the Cu substitutions, leading to the breakdown of the magnetization versus electron count guidelines usually followed by Heusler phases, and a more typical metallic non-spin-polarized electronic structure at high x.

Original languageEnglish (US)
Article number075701
JournalJournal of Physics Condensed Matter
Volume30
Issue number7
DOIs
StatePublished - Jan 22 2018

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics

Keywords

  • Heusler compounds
  • Weyl semimetal
  • electronic properties
  • magnetic properties

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