• Corpus ID: 239050472

Gapless Dirac magnons in CrCl$_{3}$

  title={Gapless Dirac magnons in CrCl\$\_\{3\}\$},
  author={John A. Schneeloch and Yu Tao and Yongqiang Q. Cheng and Luke L. Daemen and Guangyong N. M. N. Xu and Qiang Zhang and Despina Louca},
Bosonic Dirac materials are testbeds for dissipationless spin-based electronics. In the quasi two-dimensional honeycomb lattice of CrX$_{3}$ (X=Cl, Br, I), Dirac magnons have been predicted at the crossing of acoustical and optical spin waves, analogous to Dirac fermions in graphene. Here we show that, distinct from CrBr$_{3}$ and CrI$_{3}$, gapless Dirac magnons are present in bulk CrCl$_{3}$, with inelastic neutron scattering intensity at low temperatures approaching zero at the Dirac $K… 

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