Dirac and Nodal Line Magnons in Three-Dimensional Antiferromagnets

We study the topological properties of magnon excitations in three-dimensional antiferromagnets, where the ground state configuration is invariant under time reversal followed by space inversion (PT symmetry). We prove that Dirac points and nodal lines, the former being the limiting case of the latt...

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Veröffentlicht in:	Physical review letters 2017-12, Vol.119 (24), p.247202-247202
Hauptverfasser:	Li, Kangkang, Li, Chenyuan, Hu, Jiangping, Li, Yuan, Fang, Chen
Format:	Artikel
Sprache:	eng
Online-Zugang:	Volltext
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