Screening ineffectiveness and THz emission at bare LO phonon frequencies

Details Screening ineffectiveness and THz emission at bare LO phonon frequencies Screening ineffectiveness and THz emission at bare LO phonon frequencies

2001-05-28

arxiv.org/abs/cond-mat/0105529v2

Phys. Rev. B 66, 060301(R) (2002)

Physics

Condensed Matter

4 two-column pages, 3 figures [minor changes to text; added inset to Fig. 1(c)]

Scientific paper

10.1103/PhysRevB.66.060301

Within a hydrodynamic approach we investigate the dynamics of an inhomogeneous electron-hole gas coupled to phonons in Te and the corresponding THz emission. We find that the longitudinal inhomogeneity of the photogenerated electron-hole gas -- due to short absorption lengths in Te -- gives rise to screening ineffectiveness for non-zero wave-vector modes. This allows for THz dynamics and emission at the bare LO phonon frequency nu_{LO} even at high carrier densities. Screening ineffectiveness thus provides an appealingly simple explanation for the existence of bare modes at nu_{LO} in longitudinally inhomogeneous systems such as Te; no lateral inhomogeneity of the excitation spot is needed here.

Affiliated with

Also associated with

No associations

Rating

Screening ineffectiveness and THz emission at bare LO phonon frequencies 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 Screening ineffectiveness and THz emission at bare LO phonon frequencies, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Screening ineffectiveness and THz emission at bare LO phonon frequencies will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-313724