Crossover between polariton and phonon local states. Anisotropy-induced localization threshold

Details Crossover between polariton and phonon local states. Anisotropy-induced localization threshold Crossover between polariton and phonon local states. Anisotropy-induced localization threshold

1998-03-31

arxiv.org/abs/cond-mat/9803375v1

Physics

Condensed Matter

Disordered Systems and Neural Networks

16 pages, 1 figure

Scientific paper

We consider the impurity-induced polariton local states in a dipole-active medium. These states present the local optical vibrations which are coherently coupled with the induced electromagnetic field. We show that the crossover between the polariton and phonon local states takes place within the relativistically narrow interval near the bottom of the polariton gap. However, the resonant phonon-photon interaction leads to the absence of the lower threshold of the impurity strength. These results are due to the singularity of the density of the polariton states, which is generic for any isotropic dipole-active phonon mode with the negative dispersion. We show that a weak anisotropy removes this singularity and sets a finite threshold for the local polariton states.

Affiliated with

Also associated with

No associations

Rating

Crossover between polariton and phonon local states. Anisotropy-induced localization threshold 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 Crossover between polariton and phonon local states. Anisotropy-induced localization threshold, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Crossover between polariton and phonon local states. Anisotropy-induced localization threshold will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-309376