Two-orbital effective model for magnetic Weyl semimetal in kagome-lattice shandite

Akihiro Ozawa, Kentaro Nomura

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1 Citation (Scopus)

Abstract

We construct a two-orbital effective model for a ferromagnetic Kagome-lattice shandite, Co3Sn2S2, a candidate material of magnetic Weyl semimetals, by considering one d orbital from Co, and one p orbital from interlayer Sn. The energy spectrum near the Fermi level, and the configurations of the Weyl points, computed by using our model, are similar to those obtained by first-principles calculations. We show also that nodal rings appear even with spin–orbit coupling when the magnetization points in-plane direction. Additionally, magnetic properties of Co3Sn2S2 and other shandite materials are discussed.

Original languageEnglish
Article number123703
Journaljournal of the physical society of japan
Volume88
Issue number12
DOIs
Publication statusPublished - 2019 Jan 1

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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