TY - JOUR
KW - paper
AU - Pierluigi Cudazzo
AU - Matteo Gatti
AU - Angel Rubio
AB - Two-dimensional (2D) transition-metal dichalcogenides (TMDs) are gaining increasing attention as an alternative to graphene for their very high potential in optoelectronics applications. Here, we consider two prototypical metallic 2D TMDs, NbSe 2 and TaS 2 . Using a first-principles approach, we investigate the properties of the localized intraband d plasmon that cannot be modeled on the basis of the homogeneous electron gas. Finally, we discuss the effects of the reduced dimensionality on the plasmon dispersion through the interplay between the interband transitions and the local-field effects. This result can be exploited to tune the plasmonic properties of these novel 2D materials.
BT - New Journal of Physics
M1 - 12
N2 - Two-dimensional (2D) transition-metal dichalcogenides (TMDs) are gaining increasing attention as an alternative to graphene for their very high potential in optoelectronics applications. Here, we consider two prototypical metallic 2D TMDs, NbSe 2 and TaS 2 . Using a first-principles approach, we investigate the properties of the localized intraband d plasmon that cannot be modeled on the basis of the homogeneous electron gas. Finally, we discuss the effects of the reduced dimensionality on the plasmon dispersion through the interplay between the interband transitions and the local-field effects. This result can be exploited to tune the plasmonic properties of these novel 2D materials.
PY - 2013
EP - 125005
T2 - New Journal of Physics
TI - Local-field effects on the plasmon dispersion of two-dimensional transition metal dichalcogenides
UR - http://stacks.iop.org/1367-2630/15/i=12/a=125005
VL - 15
ER -