Strategies for Designing Magnetic Weyl Semimetals
ORAL
Abstract
Weyl semimetals are novel topological conductors that host Weyl fermions as emergent quasiparticles. Weyl quasiparticles can arise through the breaking of either the inversion or time-reversal symmetry. Although the first inversion-breaking Weyl semimetal was discovered recently in TaAs, its magnetic counterpart has remained elusive. The time-reversal breaking Weyl phase is predicted to exhibit exotic properties distinct from the inversion-breaking phases. Here we propose and compare different strategies for designing Weyl semimetals, and identify a large class of magnetic Weyl semimetals in RAlGe[1 2] and Co2TiX[3] families. We will also illustrate our approach for generating magnetic Weyl nodes from Nexus fermions[4]. \\1 S-Y. Xu et al, arXiv: 1603.07318 \\2 G. Chang et al, arXiv: 1604.02124 \\3 G. Chang et al, arXiv: 1603.01255 \\4 G. Chang et al, arXiv: 1605.06831
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