QuasiparticleGWband structures and Fermi surfaces of bulk and monolayerNbS2

  title={QuasiparticleGWband structures and Fermi surfaces of bulk and monolayerNbS2},
  author={Christopher Heil and Martin Schlipf and Feliciano Giustino},
  journal={Physical Review B},
In this work we employ the $GW$ approximation in the framework of the SternheimerGW method to investigate the effects of many-body corrections to the band structures and Fermi surfaces of bulk and monolayer NbS$_2$. For the bulk system, we find that the inclusion of these many-body effects leads to important changes in the band structure, especially in the low-energy regime around the Fermi level, and that our calculations are in good agreement with recent ARPES measurements. In the case of a… 
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