Prediction of ideal triple degenerate points in HfIrAs and HfIrBi

Song ZG, Felser C, Sun Y (2018)

Publication Type: Journal article

Publication year: 2018

Journal

Physical Review B American Physical Society

Book Volume: 94

Article Number: 165131

Journal Issue: 16

DOI: 10.1103/PhysRevB.98.165131

Abstract

In this study, two ideal triple degenerate point (TDP) semimetals were predicted, namely, HfIrAs and HfIrBi, which 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 four-band model, the bulk inversion asymmetry was found to directly determine 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 investigated for two different crystal face orientations [(111) and (110)], both of which could be detected using photoemission spectroscopy. In addition, the disappearance of the spin texture, which was studied in strained HgTe bulk states, was also observed in the surface states. The results of this study indicate that the two materials are unique platforms on which emergent phenomena, such as the interplay between the TDP of semimetals and superconductivity, can be explored.

Involved external institutions

Max-Planck-Institut für Chemische Physik fester Stoffe (MPI CPfS) / Max Planck Institute for Chemical Physics of Solids DE Germany (DE)

How to cite

APA:

Song, Z.-G., Felser, C., & Sun, Y. (2018). Prediction of ideal triple degenerate points in HfIrAs and HfIrBi. Physical Review B, 94(16). https://doi.org/10.1103/PhysRevB.98.165131

MLA:

Song, Zhi-Gang, Claudia Felser, and Yan Sun. "Prediction of ideal triple degenerate points in HfIrAs and HfIrBi." Physical Review B 94.16 (2018).

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