Corpus ID: 117802542

The next nearest neighbor effect on the 2D materials properties

@inproceedings{Ahmed2011TheNN,
  title={The next nearest neighbor effect on the 2D materials properties},
  author={Maher Ahmed},
  year={2011}
}
In this work, the effect of introducing next nearest neighbor (NNN) hopping to the 2D materials was studied using the graphene 2D honeycomb two sublattice as an example. It is found that introducing NNN to the 2D materials removes the symmetry around the Fermi level and shifts it, at a small value of NNN hopping. This effect increases with increasing NNN hopping. If the NNN hopping becomes competitive with nearest neighbor (NN) hopping, the dispersion relations of the 2D materials changes… Expand