The Effect of Charge Order on the Plasmon Dispersion in Transition-Metal Dichalcogenides

Details The Effect of Charge Order on the Plasmon Dispersion in Transition-Metal Dichalcogenides The Effect of Charge Order on the Plasmon Dispersion in Transition-Metal Dichalcogenides

2011-07-05

arxiv.org/abs/1107.0892v1

Phys. Rev. Lett., 107, 176404 (2011)

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages, 3 figures

Scientific paper

10.1103/PhysRevLett.107.176404

We investigate the dispersion of the charge carrier plasmon in the three prototypical charge-density wave bearing transition-metal dichalcogenides 2H-TaSe2, 2H-TaS2 and 2H-NbSe2 employing electron energy-loss spectroscopy. For all three compounds the plasmon dispersion is found to be negative for small momentum transfers. This is in contrast to the generic behavior observed in simple metals as well as the related system 2H-NbS2, which does not exhibit charge order. We present a semiclassical Ginzburg-Landau model which accounts for these observations, and argue that the vicinity to a charge ordered state is thus reflected in the properties of the collective excitations.

Affiliated with

Also associated with

No associations

Rating

The Effect of Charge Order on the Plasmon Dispersion in Transition-Metal Dichalcogenides does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with The Effect of Charge Order on the Plasmon Dispersion in Transition-Metal Dichalcogenides, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Effect of Charge Order on the Plasmon Dispersion in Transition-Metal Dichalcogenides will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-477450