Open AccessRole of electron correlations in some Weyl systems
Author(s) -
Niraj Aryal,
Efstratios Manousakis
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/2122/1/012002
Subject(s) - coulomb , atomic orbital , physics , spin (aerodynamics) , coupling (piping) , electron , point (geometry) , theoretical physics , quantum mechanics , condensed matter physics , spin–orbit interaction , mathematics , geometry , materials science , metallurgy , thermodynamics
We are discussing a model to understand previously obtained results on Weyl semimetals as realized in MoTe 2 using DFT and DFT+U calculations. The model is motivated from general principles and we use it to investigate the effects of Coulomb correlations originating from the localized nature of the Mo-d orbitals. We find that such correlations can eliminate or create pairs of Weyl points as the strength of the Coulomb interaction is varied. The effect of the spin-orbit coupling (SOC) is to split each Weyl point, which is assumed present in the absence of SOC, into pairs of spin-chiral partners.