Prediction of ideal triple degenerate points in HfIrAs and HfIrBi

  title={Prediction of ideal triple degenerate points in HfIrAs and HfIrBi},
  author={Zhigang Song and Claudia Felser and Yan Sun},
  journal={Physical Review B},
In this study, two ideal triple degenerate point (TDP) semimetals were predicted, namely, HfIrAs and HfIrBi, that exhibit clean TDPs around the fermi level. At the atomic level, the origin of the TDP was analyzed, and when combined with the low-energy effective 4-band model, it was found that the bulk inversion asymmetry directly determines the formation of the TDP for cubic crystals. The projected surface states and corresponding patterns of the fermi arcs with and without tensile strain were… 
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