Crystal growth and stoichiometry-dependent properties of the ferromagnetic Weyl semimetal ZrCo2-xSn

Satya K. Kushwaha, Karoline Stolze, Zhijun Wang, Max Hirschberger, Jingjing Lin, B. Andrei Bernevig, N. Phuan Ong, Robert J. Cava

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6 Scopus citations

Abstract

We report the growth of high quality bulk crystals, through crystallization from molten Sn flux, of the predicted ferromagnetic Weyl metal ZrCo2-xSn with the L21 Heusler phase structure. The concentration of Co vacancies in the single crystals is found to be dependent on the initial concentration of Co in the flux. The saturation magnetization increases approximately linearly with decreasing Co deficiency and the ferromagnetic transition temperature changes significantly. p-type carrier conduction and an anomalous Hall effect are observed. The calculated electronic density of states of ZrCo2-xSn shows a significant change in minority and majority spin state occupancies and a shift in the Fermi level with Co deficiency.

Original languageEnglish (US)
Article number225702
JournalJournal of Physics Condensed Matter
Volume29
Issue number22
DOIs
StatePublished - Apr 25 2017

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics

Keywords

  • Weyl semimetal
  • ferromagnetic Heusler
  • magnetic properties
  • topological materials

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