Two- and one-dimensional honeycomb structures of silicon and germanium.

@article{Cahangirov2009TwoAO,
  title={Two- and one-dimensional honeycomb structures of silicon and germanium.},
  author={Seymur Cahangirov and Mehmet Topsakal and Ethem Akt{\"u}rk and Hasan Sahin and Salim Ciraci},
  journal={Physical review letters},
  year={2009},
  volume={102 23},
  pages={
          236804
        }
}
First-principles calculations of structure optimization, phonon modes, and finite temperature molecular dynamics predict that silicon and germanium can have stable, two-dimensional, low-buckled, honeycomb structures. Similar to graphene, these puckered structures are ambipolar and their charge carriers can behave like a massless Dirac fermion due to their pi and pi(*) bands which are crossed linearly at the Fermi level. In addition to these fundamental properties, bare and hydrogen passivated… Expand
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TLDR
New silicon and germanium tubular nanostructures with no corresponding stable carbon analogues are reported, which are semiconducting with small indirect band gaps, which can be significantly altered by both compressive and tensile strains. Expand
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