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arXiv · 2205.05108

Nodal vacancy bound states and resonances in three-dimensional Weyl semimetals

J. P. Santos Pires·S. M. João·Aires Ferreira·B. Amorim·J. M. Viana Parente Lopes
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Abstract

The electronic structure of a cubic $\mathcal{T}$-symmetric Weyl semimetal is analysed in the presence of atomic-sized vacancy defects. Isolated vacancies are shown to generate nodal bound states with $r^{{\scriptscriptstyle -2}}$ asymptotic tails, even when immersed in a weakly disordered environment. These states show up as a significantly enhanced nodal density of states which, as the concentration of defects is increased, reshapes into a nodal peak that is broadened by inter-vacancy hybridisation into a comb of satellite resonances at finite energies. Our results establish point defects as a crucial source of elastic scattering that leads to nontrivial modifications in the electronic structure of Weyl semimetals.

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J. P. Santos Pires, S. M. João, Aires Ferreira, B. Amorim, J. M. Viana Parente Lopes. 2022-05-10. Nodal vacancy bound states and resonances in three-dimensional Weyl semimetals. https://doi.org/10.1103/physrevb.106.184201

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