Abstract
We have studied the optical conductivity of two-dimensional (2D)\nsemiconducting transition metal dichalcogenides (STMDC) using ab-initio density\nfunctional theory (DFT). We find that this class of materials presents large\noptical response due to the phenomenon of band nesting. The tendency towards\nband nesting is enhanced by the presence of van Hove singularities in the band\nstructure of these materials. Given that 2D crystals are atomically thin and\nnaturally transparent, our results show that it is possible to have strong\nphoton-electron interactions even in 2D\n
Keywords
Condensed matter physicsBand gapDensity functional theoryElectronic band structureNesting (process)Materials scienceTransition metalOptical conductivityPhysicsChemistryComputational chemistry
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Publication Info
- Year
- 2013
- Type
- article
- Volume
- 88
- Issue
- 11
- Citations
- 326
- Access
- Closed
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Cite This
Alexandra Carvalho,
R. M. Ribeiro,
A. H. Castro Neto
(2013).
Band nesting and the optical response of two-dimensional semiconducting transition metal dichalcogenides.
Physical Review B
, 88
(11)
.
https://doi.org/10.1103/physrevb.88.115205
Identifiers
- DOI
- 10.1103/physrevb.88.115205